Practice Test


Q1) Some cells in our body can be over a foot long, they are: Show Answer


Q2) Power of regeneration is lowest in: Show Answer


Q3) Nervous system is concerned with two important functions: Show Answer


Q4) A neuron is: Show Answer


Q5) Synapse is a term to denote the: Show Answer


Q6) The sympathetic and parasympathetic systems constitute: Show Answer


Q7) The central nervous system inclueds: Show Answer


Q8) The central nervous system; cranio-spinal system; autonomic system and receptor system in a vertebrate collectively forms: Show Answer


Q9) Brain in frog is contained in cranium, enveloped by connective tissue membrane called: Show Answer


Q10) The brain is surrounded by an outer fibrous, non-vascular membrane called: Show Answer


Q11) The inner membrane surrounding brain is: Show Answer


Q12) Pineal stalk, a slender tubular structure arises from: Show Answer


Q13) Optic chiasm is formed by the crossing over of two: Show Answer


Q14) Hypothalamus forms the floor and lower part of: Show Answer


Q15) Two-thirds of entire brain is made of: Show Answer


Q16) In mammals the two lobes of cerebral hemisphere are connected by large distinctive transverse fibrous bridge of white matter called: Show Answer


Q17) Cell bodies of neurons bringing afferent information into spinal cord are located in: Show Answer


Q18) In brain, crura cerebri is a structure made of: Show Answer


Q19) The roof of medulla oblongata is thin and piamater in this portion is greatly folded, richly vascular and pushed into cavity of medulla as: Show Answer


Q20) The ventricles of brain and central canal of spinal cord are filled with a fluid called: Show Answer


Q21) Olfactory lobes of human are: Show Answer


Q22) Nissl granules in the nerve cell bodies are actually: Show Answer


Q23) The anterior choroid plexus is located in or near the: Show Answer


Q24) The pineal body is considered as: Show Answer


Q25) If cerebral hemispheres of frog are removed, it: Show Answer


Q26) In human brain, corpora quadrigemina represents: Show Answer


Q27) The cavity of spinal cord is called: Show Answer


Q28) Brain develops from: Show Answer


Q29) The function of central nervous system: Show Answer


Q30) Corpora striata is a part of: Show Answer


Q31) Foramen of Monro in brain is an aperture between: Show Answer


Q32) Which part of the brain controls muscular co-ordination? Show Answer


Q33) A deep longitudinal fissure divides the cerebrum: Show Answer


Q34) The dendrites of a typical vertebrate motor neuron, compared to the neuron's axon are generally: Show Answer


Q35) The parts of neurons that perform basic cellular functions, such as protein synthesis, are the: Show Answer


Q36) The medulla oblongata continues as spinal cord which runs in the canal of the: Show Answer


Q37) It is said injury to brain is permanent and nerve cells cannot regenerate. The reason is: Show Answer


Q38) Regulation of heart beat and respiration is controlled by: Show Answer


Q39) The volume of blood supplied to the brain per miunte is: Show Answer


Q40) Third ventricle of rabbit's brain is called: Show Answer


Q41) Learning is related to which part of human brain? Show Answer


Q42) Thermo-regulatory centre in the body is: Show Answer


Q43) The ganglion from which trigeminal nerve arises is called: Show Answer


Q44) The maximum number of meninges in animals is/are: Show Answer


Q45) Foramen of Magendie is found in: Show Answer


Q46) When action potential jumps from one node of Ranvier to the next, it is termed as: Show Answer


Q47) The sensory neuron transmits patterns of action potentials that indicate: Show Answer


Q48) A receptor that detects the position of parts of the body is called: Show Answer


Q49) Regulatory control of deep body temperature, osmoregulation, thirst and hunger occur in the: Show Answer


Q50) In looking at the evolution of the vertebrate brain from fish to humans, the greatest increase in size are seen in the: Show Answer


Q51) Plasticity in a nervous system is reflected in animal: Show Answer


Q52) Impulses leave a neuron via the: Show Answer


Q53) The myelin sheath around the axons of some vertebrate neurons: Show Answer


Q54) In humans the cerebral cortex is roughly about 80% of total brain mass. A touch on right hand stimulates neurons in the: Show Answer


Q55) A neuron transmits information about the intensity of a stimulus that it has received by: Show Answer


Q56) The ventricles of cerebral hemispheres communicate through: Show Answer


Q57) The main functions of cerebrospinal fluid in the ventricles of brain and central canal of spinal cord is: Show Answer


Q58) The optic nerves in brain leave the cranium by the: Show Answer


Q59) The oculomotor nerve arises from crura cerebri and innervates: Show Answer


Q60) The facial nerve arises form medulla oblongata and it is: Show Answer


Q61) Pneumogastric or vagus nerve is both sensory and motor in nature and innervates: Show Answer


Q62) In brain the chief co-ordinating centres for intelligence, memory, emotions and ability to learn from experience is present at: Show Answer


Q63) Cerebellum is the centre for reflex coordination and muscular tone. If the cerebellum is injured: Show Answer


Q64) In one second nerve impulse travels about: Show Answer


Q65) Respiration, circulation of blood, heart beat, digestive organ movements, swallowing, gland secretion and all unconscious activities are controlled: Show Answer


Q66) The H shaped matter surrounding the central canal of spinal cord is known as: Show Answer


Q67) Aqueduct of Sylvius or iter connects: Show Answer


Q68) Mammalian brain can be distinguished externally from amphibian brain by: Show Answer


Q69) Filum terminale is the name given to: Show Answer


Q70) Cranial nerve which brings impulse from skin of snout, upper jaw, tongue and lower jaw is: Show Answer


Q71) The spinal nerve are: Show Answer


Q72) Which of the following is purely a motor nerve? Show Answer


Q73) The 9th cranial nerve is called: Show Answer


Q74) Auditory nerve innervates: Show Answer


Q75) Sciatic nerve in frog is originated from a plexus formed by: Show Answer


Q76) The optic nerve is responsible for: Show Answer


Q77) Difference in reflex and reflex action lies in: Show Answer


Q78) The number of spinal nerves in frog is: Show Answer


Q79) Among the following which is concerned with neurosecretion in a vertebrate? Show Answer


Q80) Which one of the following is smallest nerve that innervates cephalic region only? Show Answer


Q81) Only one cranial nerve is longest and innervates organs situated outside the cephalic regions of the body also. It is; Show Answer


Q82) The eighth cranial nerve carries impulse from: Show Answer


Q83) Which of the following statements is correct? Show Answer


Q84) Optic chiasm is principally concerned with: Show Answer


Q85) Which of the following cranial nerves is purely motor in function? Show Answer


Q86) The body of sensory neuron involved in a simple reflex action is located in the: Show Answer


Q87) When movements occur without the intervention of the brain they are called: Show Answer


Q88) The axon membrane shows a positive charge on the outside and negative charge inside, this is called: Show Answer


Q89) The duration of absolute refractory period of a nerve fibre is: Show Answer


Q90) The hormone adrenaline is same as the neurotransmitter: Show Answer


Q91) The term arachnoid is derived from arachine and means: Show Answer


Q92) Which one of the following nerves is not related to the movement of eye ball? Show Answer


Q93) Central canal of frog lined by ependyma is a continuation of: Show Answer


Q94) Which one is a function of parasympathetic nervous system in mammals? Show Answer


Q95) Which one of the following is the effect of parasympathetic nervous system: Show Answer


Q96) Cerebral hemisphere of frog has a cavity called: Show Answer


Q97) In frog the nature of glossopharyngeal and vagus nerve is: Show Answer


Q98) Stimulation of vagus nerve: Show Answer


Q99) At the nerve synapses: Show Answer


Q100) The nerve fibres which conduct impulses from the peripheral to the central nervous system are called: Show Answer


Q101) The nerve fibres which carry impulses from the central nervous system to the muscles and glands for contration and secretion are called as: Show Answer


Q102) When sympathetic system acts on a particular organ, its action is: Show Answer


Q103) The simplest form of nervous system that integrates body activities is found in cnidarians and called: Show Answer


Q104) Excitability and conductivity are the outsatnding properties of: Show Answer


Q105) Dendrities transmit the impulses to: Show Answer


Q106) Resting potential of nerve cells is: Show Answer


Q107) Nerve is: Show Answer


Q108) Myelinated fibres are nerve fibres which are: Show Answer


Q109) If a frog is pithed and an electric shock is applied to its leg: Show Answer


Q110) The transmission of nerve impulse is a: Show Answer


Q111) The potential difference between inside and outside of a neuron before excitation is known as: Show Answer


Q112) What is the difference between the conduction of electricity through an electric wire and that of nerve impulse through a nerve fibre? Show Answer


Q113) When nerve is stimulated. It is polarized. Depolarization is maintained by the following ion: Show Answer


Q114) During resting condition the membrane of axon is: Show Answer


Q115) The part of ommatidium that is functionally similar to retina is: Show Answer


Q116) The simplest form of nerve network is: Show Answer


Q117) The chemical theory of transmission attributes the response of postsynaptic cells to a chemical substance released from: Show Answer


Q118) Acetylcholine is most closely associated with which of the following systems? Show Answer


Q119) The sensory ganglion concerned with spinal reflex lies in: Show Answer


Q120) Sodium pump of an axon is operative at: Show Answer


Q121) The gap between terminal knobs of an axon and dendrites of the cell body of another axon is known as: Show Answer


Q122) Acetylcholine is: Show Answer


Q123) Action potential is: Show Answer


Q124) During refractory period: Show Answer


Q125) Electrical impulse of the eye recorded are: Show Answer


Q126) Neurotransmitters are compounds which: Show Answer


Q127) The 3rd, 6th, and 11th cranial nerves are: Show Answer


Q128) Which of the following cranial nerves is present in rabbit but absent in frog? Show Answer


Q129) Nervous system was first of all originated in: Show Answer


Q130) Sympathetic nerves in mammals arise from: Show Answer


Q131) At the nerve cell membrane, the equilibrium potential for potassium is: Show Answer


Q132) The "spike" phase of action potential lasts for roughly: Show Answer


Q133) One nerve is stimulated, it is polarized. Depolarization is maintained by the following ion. Show Answer


Q134) Conduction of nerve impulse along a myelinated nerve is: Show Answer


Q135) Somesthetic area is located in: Show Answer


Q136) The ends of bipolar neurons in retina of man touch: Show Answer


Q137) Glands of Swammerdam are rich in: Show Answer


Q138) Sensory neuron in a vertebrate reflex are located in: Show Answer


Q139) The benzodiazepine drug known as valium produces relaxation by aiding the binding to receptor proteins of inhibitory neurotransmitter: Show Answer


Q140) Which one of the following is function of pons Varolii? Show Answer


Q141) Cervical plexus is formed by: Show Answer


Q142) Presynaptic membrane permits: Show Answer


Q143) Heart beat is regulated by: Show Answer


Q144) The refractory centre which regulates respiration is located in: Show Answer


Q145) Which brain structure in rabbit is directly vision related? Show Answer


Q146) Most of the neurons of our body are: Show Answer


Q147) Body co-ordination is exhibited by: Show Answer


Q148) The sodium-potassium pump: Show Answer


Q149) In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive: Show Answer


Q150) The resting potential of neurons is -70 m V. It is mainly due to: Show Answer


Q151) A nerve impulse which travels through nerve fibre only if its membrane suddenly becomes more permeable to ions of: Show Answer


Q152) An action potential, for a given axon, is: Show Answer


Q153) Which of the following increase when an action potential is initiated? Show Answer


Q154) When an action potential abruptly drops from postive to negative, this is because: Show Answer


Q155) A nerve impulse leaves a neuron via: Show Answer


Q156) Synapse is a gap between adjacent: Show Answer


Q157) A nerve which conveys impulses from a tissue to nerve centre is called: Show Answer


Q158) The speed at which impulses are conducted increases with: Show Answer


Q159) Saltatory conduction of nerve impulses occurs in: Show Answer


Q160) Synaptic fatigue is due to: Show Answer


Q161) Secretion of parasympathetic nerve endings is: Show Answer


Q162) Anesthetics reduce pain by blocking the transmission of nerve impulses. The kind of chemicals working as anesthetics are those that block: Show Answer


Q163) In brain centre for thirst is situated in: Show Answer


Q164) Nerve impulse travels by steps: Show Answer


Q165) Simple two neuron reflex are involved: Show Answer


Q166) Slow neurotransmission is mediated by: Show Answer


Q167) Which of the following nerves is absent in frog? Show Answer


Q168) Which of the nerves functions more like a tract of brain than a nerve? Show Answer


Q169) Which of the following is not strictly considered a part of neuron? Show Answer


Q170) The vagus nerve is cranial nerve numbering: Show Answer


Q171) The Nissl granules of nerve cells are made up of: Show Answer


Q172) Centre for sense of smell is: Show Answer


Q173) Nerve related to diaphragm is: Show Answer


Q174) During development of action potential in a nerve fibre, positive and negative charges on outer and inner side of axon membrane are reversed dut to: Show Answer


Q175) Broca area and Wernicke centre of association area occur in cerebrum. They are connected with: Show Answer


Q176) Centre of thirst and hunger is located in: Show Answer


Q177) Common feature amongst acetylcholine, noradrenalineand serotonin is: Show Answer


Q178) At resting stage nerve cell has: Show Answer


Q179) Nerve axon takes part in: Show Answer


Q180) Preganglionic sympathetic fibres are: Show Answer


Q181) Arbor vitae is composed of: Show Answer


Q182) Action potential has what value? Show Answer


Q183) Venom of Cobra affects: Show Answer


Q184) A frog with crushed brain is pinched on the leg. The leg is drawn away. It is: Show Answer


Q185) Structure connected with vision in Rabbit is: Show Answer


Q186) Which one of the following is a purely motor nerve? Show Answer


Q187) Refractory period is during: Show Answer


Q188) Node of Ranvier is the place where: Show Answer


Q189) Which of the following cranial nerve controls the movement of eye ball? Show Answer


Q190) Which of the following is a part of human brain? Show Answer


Q191) A bipolar neuron has: Show Answer


Q192) These processes occur during repolarization of nerve fibre: Show Answer


Q193) Touch on the right side stimulate neurons on: Show Answer


Q194) Respiratory centre of brain is sensitised by: Show Answer


Q195) Cerebrospinal fluid is present: Show Answer


Q196) That part of the brain which is involved in interpreting an input, storing input information and initiating a response in the light of similar past experience is: Show Answer


Q197) The point in eye of mammals from which optic nerves and blood vessels leaves the eye ball is: Show Answer


Q198) The primary visual area is located in: Show Answer


Q199) Choroid plexus is a network of: Show Answer


Q200) Injury to vagus nerve in human is not likely to affect: Show Answer


Q201) Unidirectional transmission of a nerve impulse through nerve fibre is due to the fact that: Show Answer


Q202) Which of the following is mixed nerve? Show Answer


Q203) Four healty people in their twenties got involved in injuries resulting in damage and death of a few cells of the following. Which of the cells are least likely to be replaced by new cells? Show Answer


Q204) One of the examples of the action of the automomous nervous system is: Show Answer


Q205) Parkinson's disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter: Show Answer


Q206) In a man, abducens nerve is injured. Which one of the following functions will be affected? Show Answer


Q207) Tree of life is: Show Answer


Q208) Arbor vitae is part of: Show Answer


Q209) Which has H - shaped grey matter? Show Answer


Q210) Carnial nerve (in pairs) in frog and man are Show Answer


Q211) In parasympathetic nervous system which of the following is released? Show Answer


Q212) Hypothalamus does not control: Show Answer


Q213) The brachial plexus are formed by these spinal nerves: Show Answer


Q214) Which one of the following does not act as a neurotransmitter? Show Answer


Q215) How many pairs of spinal nerve are found in human? Show Answer


Q216) The decoding and interpretation of visual information is carried out by which part of the brain? Show Answer


Q217) A typical value of resting membrane potential is: Show Answer


Q218) Bowman's glands are located in the: Show Answer


Q219) During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric charge? Show Answer


Q220) During the propagation of a nerve impulse, the action potential results from the movement of: Show Answer


Q221) The potential maintained across the neuron membrane during the resting state is: Show Answer


Q222) Which of the following is a function of nervous system? Show Answer


Q223) One of the following lack neurons: Show Answer


Q224) If neurons are clustered into groups in the CNS, they are termed: Show Answer


Q225) Bipolar neurons are located in the: Show Answer


Q226) The excitability property of nerve cells is the ability to respond to certain stimuli. This property is due to presence of: Show Answer


Q227) When a neuron is not sending a signal at rest, the plasma membrane is: Show Answer


Q228) Resting membrane potential can be measured by using two electrodes, one inside and the other outside the axon. This can be recorded with: Show Answer


Q229) In neuron, the resting membrane potential ranges from -40 to -90 mV. The typical value is: Show Answer


Q230) What is the trigger zone for a particular neuron? Show Answer


Q231) Action potential is also known as: Show Answer


Q232) Energetically saltatory conduction: Show Answer


Q233) Synaptic vesicles present in the synaptic knobs has a diameter of 50 nm. It contains how many molecules of neurotransmitter? Show Answer


Q234) Adult brain weighs about two per cent of their body weight. Its full size is formed at the age of: Show Answer


Q235) Within the soft and delicate tissue of gelatinous consistency are more than 100 billion neuron. Each can connect with as many as 25000 other cells. How many interlinked complex nerve connections are present in human brain? Show Answer


Q236) The all-or-none principle states that: Show Answer


Q237) The loss of positive ions from the interior of a neuron produces: Show Answer


Q238) Which of the following describe the largest amount of the human cerebral cortex? Show Answer


Q239) Which statement about the autonomic nervous system is true? Show Answer


Q240) Which statement is not true? Show Answer


Q241) Which of the following cranial nerves are mixed:
1. Vagus
2. Trigeminal
3. Glossopharyngeal
4. Auditory. Show Answer


Q242) Compare the effects of sympathetic and parasympathetic nervous system for four features (1-4). Which one feature is correctly described? Show Answer


Q243) The left cerebral hemisphere:
(a) receives most modalities of sensory information from the right side of the body
(b) is usually larger than the light
(c) is the dominant cerebral hemisphere in most individuals
(d) is connected to the right by the corpus callosum
(e) contains the main areas for the understanding and production of speech in most individuals which of the above statements are true Show Answer


Q244) Which one is correct about the physiology of eye? Show Answer


Q245) Part of ear where sound is transduced is Show Answer


Q246) You are watching a horror movie and you notice your heart is beating fast and mouth is dry. It is because of Show Answer


Q247) When the stimulus reaches the end of one neuron, it is conducted to the adjacent neuron through
the secretions of Show Answer


Q248) The reflex pathway comprises Show Answer


Q249) The highly specialized cells called neurons can Show Answer


Q250) Which of the following statements are correct about the midbrain?
I. Located between the thalamus/
hypothalamus
II. Has a canal named cerebral aqueduct passes through
III. Dorsal part consists of 4 lobes
Choose the correct option Show Answer


Q251) Presynaptic neuron and a post-synaptic neuron may or may not be separated by a gap called Show Answer


Q252) The band of fibre which joins corpora quadrigemina to cerebellum is called
Show Answer


Q253) What kind of neural organization can be seen in lower vertebrates? Show Answer


Q254) The movement of the nerve impulse across synaptic cleft is primarily Show Answer


Q255) During the conduction of nerve impulse, the repolarization occurs with the
Show Answer


Q256) Which of the following are the properties of neural system? Show Answer


Q257) Which part of brain controls intellectual ability? Show Answer


Q258) The middle layer of human eye, choroid contains …A… and looks …B… in colour
Choose the correct option for A, B
Show Answer


Q259) Which pair of systems jointly coordinate and integrate all the activities of the organs, so that they function
in a synchronized fashion? Show Answer


Q260) Photoreceptor cells that contains the light sensitive proteins are called Show Answer


Q261) The specific region of hypothalamus, responsible for physiological sweat secretion is Show Answer


Q262) A 22 years student goes to his ophthalamologist. He has problem in reading books because he is
not be able to contract his Show Answer


Q263) A structure of neuron comprises of Show Answer


Q264) The process of response to a peripheral nervous stimulation, that occurs involuntarily is called Show Answer


Q265) The adult human eyeball is nearly a ….. structure Show Answer


Q266) The sympathetic and parasympathetic neural system combines to form Show Answer


Q267) Choose the correct non-protein amino acid from the given option.
Show Answer


Q268) Which of the following parts of a neuron is covered by fatty sheath? Show Answer


Q269) The system that transmits impulses from CNS to skeletal muscles is Show Answer


Q270) The pressure on either sides of the ear drum gets equalized by
Show Answer


Q271) Which is a part of spinal cord?
Show Answer


Q272) Mark the following statements as true/false and choose the correct option from the codes given below
I. Neuroglial cells are the packing and supporting cells found in the brain and spinal cord
II. Oligodendrocytes is a category of glial cells that forms myelin sheaths around the axon
III. Microglia provides mechanical support to the neurons
IV. Astrocytes communicate with one another through potassium channels Show Answer


Q273) For quick coordination, our neural system is organized through Show Answer


Q274) Saltatory conduction occurs in
Show Answer


Q275) Action of lysozyme is Show Answer


Q276) The process through which two or more organs interact and complement the functions of one another, is called Show Answer


Q277) Skeletal muscles are controlled by Show Answer


Q278) Yellow spot of eye is known for Show Answer


Q279) Middle ear of humans contains ossicles, i. e.,
Show Answer


Q280) Mechanism of neural coordination involves Show Answer


Q281) Which converts short time memory into long time remembrance? Show Answer


Q282) Read the following statements.
I.Preganglionic nerve fibres of III, VII, IX and X cranial nerves are a part of the parasympathetic
nervous system
II.V,VII, IX and X cranial nerves are mixed nerves.
III.Trochlear nerves are the largest cranial nerves.
IV.Abducens nerves are motor nerves and originate from the Gasserian ganglia.
Which of the above statements are correct?
Show Answer


Q283) There are two types of photoreceptor cells, i. e., …A… and …B… . These cells contains photopigments
Here, A and B refers to Show Answer


Q284) Which is not a reflex action? Show Answer


Q285) A nerve impulse is transmitted from one neuron to another through the junctions called
Show Answer


Q286) The afferent nerve fibres transmit impulse Show Answer


Q287) Which of the damaged cells cannot be repaired? Show Answer


Q288) The system that transmits impulse from the CNS to the involuntary organs and smooth muscles of the body Show Answer


Q289) Identify the basic functions of neural system Show Answer


Q290) How many laminae are present in the grey matter of spinal cord? Show Answer


Q291) Number of cranial nerves in frog Show Answer


Q292) Reflex action is controlled by Show Answer


Q293) Vitreous chamber, which is filled by vitreous humor is the space
Show Answer


Q294) Organ of Corti is found in Show Answer


Q295) During repolarisation of nerve Show Answer


Q296) Choose the incorrect options regarding white matter of the brain
I. White matter of the brain is white in colour
II. White matter of the brain is white in colour but sometimes it is found to be grey
III. White matter of the brain is mostly formed by medullated nerve fibres
IV. White matter of the brain is formed of cell bodies of nerve fibres Show Answer


Q297) Which of the following neuron is also called excitor neuron?
Show Answer


Q298) Brain and spinal cord, combinely form the Show Answer


Q299) Nerve cells are the part of Show Answer


Q300) Spinal cord is protected by Show Answer


Q301) A person is wearing spectacles with concave lenses for correcting vision. While not using the glasses, the image
of a distant object in his case will be formed?
Show Answer


Q302) On the basis of nature of nerve fibres, the nerves are
Show Answer


Q303) Which of the following system provides the fastest means of communication within the body?
Show Answer


Q304) The correct sequence of meetings of brain from outside to inside is Show Answer


Q305) Which of the following features show antagonism over a particular organ?
Show Answer


Q306) The cutaneous plexus and the papillary plexus consists Show Answer


Q307) The velocity of action potential propagation Show Answer


Q308) Anterior choroid plexus is present on the Show Answer


Q309) Retina of eye is analogous to which part of camera? Show Answer


Q310) …….. is not involved in knee-jerk reflex Show Answer


Q311) Synaptic knob is bulb-like structure which is present Show Answer


Q312) Autonomic nervous system affects Show Answer


Q313) The PNS comprises of Show Answer


Q314) Read the following statements carefully and select the correct option
I. The medulla is connected to the spinal cord
II. Medulla contains controlling centres for respiration, cardiovascular reflexes and gastric secretion
III. Cerebellum has very convoluted surface in order to provide the additional space for more neurons
Show Answer


Q315) The respiratory rhythm centre is present in the Show Answer


Q316) Which of the following is the correct function of endocrine system with reference to chemical
coordination? Show Answer


Q317) Maintenance of the ionic gradients across the resting membrane is done by the Show Answer


Q318) How many pairs of cranial nerves are found in humans? Show Answer


Q319) Which part of the brain is involved in loss of control when a person drinks alcohol? Show Answer


Q320) Ependymal cells Show Answer


Q321) In the blind spot, where the optic nerves leave the eyes Show Answer


Q322) Association areas of the brain are Show Answer


Q323) Study of structure, functions and disease of the nervous system is called
Show Answer


Q324) Which of the following statements are correct for RAS?
I. It screens sensory information
II. It is important in overall activation and arousal
III. It is concerned with involuntary movements
IV. It is the seat of learning, memory, reasoning and creative ability
Show Answer


Q325) Which is not a part of hindbrain? Show Answer


Q326) Which of the following statements are correct for iris?
I. The ciliary body extends forward to form iris
II. It is pigmented and opaque structure
III. It is the visible coloured portion of the eye
Choose the correct option Show Answer


Q327) Brain depends on blood for the supply of Show Answer


Q328) In the axon of motor nerve fibre, the nerve impulse travels Show Answer


Q329) Rods and cones are present in Show Answer


Q330) Synaptic vesicle is found in Show Answer


Q331) Which one of the following is an example of negative feedback loop in humans? Show Answer


Q332) The brain can be divided into Show Answer


Q333) Under prolonged starvation, brain receives energy from Show Answer


Q334) Coiled portion of the labyrinth is called Show Answer


Q335) Pneumotaxic centre is present in Show Answer


Q336) Sympathetic nervous system induces Show Answer


Q337) Which of the following is correct in case of chemical synapses?
I. The membranes of the pre and postsynaptic neurons are separated by a gap called synaptic cleft
II. Chemicals called neurotransmitters are involved in the transmission of impulses
III. Impulse transmission in chemical synapse is faster than that across an electrical synapse
IV. Chemical synapses are rare in our system Show Answer


Q338) What used to be described as Nissl’s granules in a nerve cell are now identified as? Show Answer


Q339) Which of the following is known as the site of information processing and control? Show Answer


Q340) The human neural system comprises Show Answer


Q341) Association areas are regions found in Show Answer


Q342) A neuron is a …… structure Show Answer


Q343) Photoreceptor cells of human eye are Show Answer


Q344) Parkinsonism is related with Show Answer


Q345) Protein found in eye lens is
Show Answer


Q346) The nervous tissue forms the nervous system in animals. Which of the following is correct about its origin? Show Answer


Q347) Which part of the human brain is largest? Show Answer


Q348) A transparent crystalline structure which is held in place by ligaments attached to the ciliary body, is called the Show Answer


Q349) The most appropriate definition for neuroglial cells are that they are Show Answer


Q350) Brain controls the Show Answer


Q351) Myelin sheath is derived from Show Answer


Q352) The forebrain consists of Show Answer


Q353) In humans, pneumotaxic centre is present in Show Answer


Q354) Hypothalamus controls
I. urge for eating and drinking
II. thermoregulation
III. hormones production that regulates the secretion of pituitary gland
IV. creative thinking and consciousness Show Answer


Q355) Which centre is stimulated during increase in body temperature? Show Answer


Q356) Give movements are controlled by
I. Gastrointestinal movement
II. Pancreatic movement
III. Tongue movement
Select the correct option Show Answer


Q357) Which one is correct regarding the ear and hearing? Show Answer


Q358) Given below the hormones present in human body
I. Cortisone
II. Acetylcholine
III. Epinephrine
Choose the correct option regarding these hormones Show Answer


Q359) In dark adaptation,
Show Answer


Q360) Dreaming occurs in Show Answer


Q361) Node of Ranvier is found in Show Answer


Q362) Aqueous and vitreous humour are divided by Show Answer


Q363) Cerebellum is concerned with the
Show Answer


Q364) The TV cranial nerve is
Show Answer


Q365) By which nervous system and of what type, the blood is supplied into visceral organs? Show Answer


Q366) Light falls on retina and its amount is regulated by Show Answer


Q367) Blind spot is called to because of Show Answer


Q368) If dorsal nerve of spinal cord is broken down then Show Answer


Q369) Arrange the given structures in the correct sequence of pathway of light from outside to inside the eyeball
of human eye
I. Lens
II. Aqueous humour
III. Vitreous humour
IV. Cornea
Choose the correct sequence Show Answer


Q370) Which of the following is not correct for rods?
I. Twilight vision is the function of the rods
II. It is responsible for daylight vision sometimes
III. The rods contain a protein called rhodopsin
IV. Rods are photoreceptor cells
Choose the correct option Show Answer


Q371) Three major components of human eyeball are Show Answer


Q372) Which of the following is not correctly matched? Show Answer


Q373) When we do physical exercises, the energy demand is increased for Show Answer


Q374) Choose the correct statements about Nissl’s granules from the codes given below
I. There are regular masses of ribosomes
II. There are irregular masses of ribosomes and ER
III. There are granular bodies
IV. They synthesise proteins in the cell Show Answer


Q375) Olfactory lobes of man are
Show Answer


Q376) Ampulla of Lorenzini are thermoreceptors which are found in Show Answer


Q377) Vertebrate brain differentiates from Show Answer


Q378) The choroid layer of human eye is
Show Answer


Q379) Which of the following is correct for pupil of human eye?
I. It is the aperture surrounded by the iris
II. The diameter of pupil is regulated by muscle fibres of iris
III. It is a transparent crystalline structure attached to the ciliary body
The correct option is
Show Answer


Q380) Which cranial nerve gives out a number of branches?
Show Answer


Q381) The …A… receives signal from a sensory organ and transmits the impulse via a dorsal nerve root into the
CNS (at the level of spinal cord) while the …B… carries signals from …C… to the …D…
Choose the correct option for A, B, C and D to complete the given statement Show Answer


Q382) Which one of the following cranial nerves is carrying the nerve fibres originating from the
Edinger-Westphal nucleus? Show Answer


Q383) When we do physical exercises, the energy demand is
Show Answer


Q384) Which part of human brain is concerned with the regulation of body temperature? Show Answer


Q385) Identify the correct sequence of organs/regions in the organisation of human ear as an auditory
mechanoreceptor organ.
Show Answer


Q386) Thalamus is a structure wrapped by cerebrum, is
Show Answer


Q387) When different cones of human eye are stimulated equally, a sensation of …… light is produced Show Answer


Q388) Ultra violet radiation from sun causes which of the following disorder of eyes?
Show Answer


Q389) Which of the following statements are correct about the cortex of cerebum? Choose the correct codes given
below
I. It consists of grey matter
II. It shows prominent folds
III. It consists of white matter
IV. It contains motor areas, sensory areas and association areas
Show Answer


Q390) The vestibular apparatus of human ear is composed of Show Answer


Q391) Which one of the following is the correct difference between rod cells and cone cells of retina? Show Answer


Q392) Human tears contains an enzyme Show Answer


Q393) Which of the following statements are correct for a nerve cell?
I. Each neuron has a cell body
II. Each neuron has a single axon
III. Each neuron has a variable number of dendrites
IV. Neurons are the functional units of nervous system
Select the correct option Show Answer


Q394) Structurally what are olfactory nerve cells? Show Answer


Q395) Which of the following is cochlear duct?
Show Answer


Q396) Which of the following is the part of midbrain of rabbit? Show Answer


Q397) Medulla oblongata is originated from Show Answer


Q398) The forebrain develops into Show Answer


Q399) Which of the following statement is correct for Iter? Show Answer


Q400) ‘Adaptation’ of eyes in dark is due to Show Answer


Q401) Which of the following statements is correct regarding receptors in the skin? Show Answer


Q402) Nerve impulse travels faster in Show Answer


Q403) If an organism has more rods, it will Show Answer


Q404) The cell body of neuron contains of Show Answer


Q405) Connection between axon and dendrite is Show Answer


Q406) On postsynaptic membrane, the new potential developed is
Show Answer


Q407) The cranial nerve that goes to the external rectus muscle is Show Answer


Q408) Number of spinal nerves in rabbit is Show Answer


Q409) The supporting and nutritive cells found in the brain are Show Answer


Q410) Which of the following substances leads to the inhibition of central nervous system?
Show Answer


Q411) Which part of human ear is concerned with hearing?
Show Answer


Q412) Fovea in the eye is a central pit in the yellowish pigmented spot called Show Answer


Q413) Which foramen is paired in mammalian brain? Show Answer


Q414) Dendrites transmit impulses towards the Show Answer


Q415) Centre for thinking and learning is present in which part of brain? Show Answer


Q416) The reflex arc, which is made of two neurons is known as Show Answer


Q417) Bipolar neurons are found in the Show Answer


Q418) During the conduction of a nerve impulse, the action potential results from the movement of Show Answer


Q419) Bipolar neurons occur in Show Answer


Q420) Which one of the following statements is correct? Show Answer


Q421) Cerebellum of brain is responsible for Show Answer


Q422) Cornea transplant in humans is almost never rejected. This is because
Show Answer


Q423) In the following abnormalities of the eye, which one is serious condition that leads to blindness?
Show Answer


Q424) Synaptic knob possesses Show Answer


Q425) Which of the following poet is involved in interpreting an input, storing input information and
initiating a response in the light of similar past experiences? Show Answer


Q426) Which of the following is not related to the autonomic nervous system? Show Answer


Q427) The wall of the eyeball is composed of ….. layers
Show Answer


Q428) The total amount of cerebrospinal fluid in humans is Show Answer


Q429) Give the correct term for each of the following and choose the correct option from the codes given below
A. Axon or dendron, covered with one or two sheaths
B. Bundles of nerve fibres within the centralnervous system
C. Masses of neurons that lie in the peripheral nervous system
D. Masses of neurons clustered inside the central nervous system Show Answer


Q430) The amount of CSF in the cranial cavity is Show Answer


Q431) Inside the skull, the brain is covered by Show Answer


Q432) The rods contains a purplish-red protein called Show Answer


Q433) Which of the following prevents internal reflection of light within the eye? Show Answer


Q434) Aqueous chamber which is filled by aqueous humour is the space Show Answer


Q435) Human ear can be divided into Show Answer


Q436) Which is an example of conditioned reflex? Show Answer


Q437) Glucose and oxygen are required by brain for constant supply of energy to control the functions of our
body organs.
What will be the consequences if brain is deprived of oxygen and glucose?
I. Brain deprived of oxygen for just 5 minutes will get permanently damaged
II. Glucose is important in the nerve impulse conduction
III. One side of brain is unable to know, what the other side is doing, when it is deprived of oxygen
IV. Mental confusion will results if brain is deprived of glucose Show Answer


Q438) The potential difference across the membrane of nerve fibre when it does not shown any
physiological activity is called resting potential. It is about Show Answer


Q439) Which is the visible coloured portion of the eye? Show Answer


Q440) The anterior portion of sclera is called Show Answer


Q441) Arachnoid membrane is Show Answer


Q442) Cells of Schwann are associated with Show Answer


Q443) Reflex action involves Show Answer


Q444) In humans, tympanic membrane is composed of connective tissues which is covered with Show Answer


Q445) At blind spot Show Answer


Q446) Wax gland present in the human ear canal is called Show Answer


Q447) Yellow spot is found in Show Answer


Q448) Function of ear ossicles in human is Show Answer


Q449) Sclera of human eye is composed of Show Answer


Q450) The nerve centres which control the body temperature and the urge for eating are controlled by Show Answer


Q451) Involuntary activities of the body are controlled by Show Answer


Q452) The cavity in the region of diencephalon in the brain of rabbit is called Show Answer


Q453) Which one is correct about the focusing of the eye? Show Answer


Q454) The part of the brain where the centre for hunger and thirst is located is Show Answer


Q455) Given below are different components of reflex are
I. Effector organ
II. Interneuron
III. Motor neuron
IV. Sensory neuron
V. Sensory receptor
Arrange these in correct order of action potential that follows a sensory receptor stimulation Show Answer


Q456) Internal ear is filled with Show Answer


Q457) At the posterior pole of the eye lateral to the blind spot, there is a yellowish pigmented spot called Show Answer


Q458) The electrical potential difference between outside and inside of a nerve axon before excitation is
known as
Show Answer


Q459) Which of the following statement is incorrect? Show Answer


Q460) Taste area lies in the Show Answer


Q461) Functions of association areas in cerebral cortex includes Show Answer


Q462) In which of the following, Nissl’s granules are found in? Show Answer


Q463) The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the
human eyes is a derivative of Show Answer


Q464) The functions of the organs/organ system in our body must be coordinated to maintain …….
Complete the given statement with reference to NCERT textbook Show Answer


Q465) Cerebral hemispheres of rat are connected by
Show Answer


Q466) Multipolar neurons are found in the Show Answer


Q467) The system, responsible for providing an organized network of point to point connections for a quick coordination, is called Show Answer


Q468) The …… nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon Show Answer


Q469) The black pigment layer in human eye, that reduces internal reflection is located in Show Answer


Q470) Which of the following is not an organ of central nervous system? Show Answer


Q471) Dilatation of pupil takes place by Show Answer


Q472) Ina myelinated neuron, two adjacent myelin sheaths are separated by gaps called Show Answer


Q473) The gaps between two adjacent myelin sheaths is called Show Answer


Q474) Sympathetic nerve accelerates heart beat due to Show Answer


Q475) Which of the following does not act as a neurotransmitter? Show Answer


Q476) Odd nerve is Show Answer


Q477) Axons can be Show Answer


Q478) Schwann cells, form a myelin sheath around the Show Answer


Q479) Which of the following nerves is purely motor nerve?
Show Answer


Q480) Choroid plexus functions to produce Show Answer


Q481) Along with hypothalamus, limbic system is involved in the
I. thermoregulation
II. regulation of sexual behavior
III. expression of emotional reactions (e. g., excitement, pleasure, rage and fear)
IV. motivation
Choose the correct option Show Answer


Q482) Alzheimer’s disease in human is associated with the deficiency of Show Answer


Q483) Which of the following is a neuroglial cell? Show Answer


Q484) Outer ear of humans consists of Show Answer


Q485) In eye donation, which one of the following parts of donor’s eye is utilized? Show Answer


Q486) At the neuromuscular function Show Answer


Q487) Lipofucsin granules are found in
Show Answer


Q488) Brain stem is formed by Show Answer


Q489) Corti’s organs is present in Show Answer


Q490) Following are the steps of mechanism of vision in random order
I. Neural impulses are analysed and image formed on retina is recognised by visual cortex
II. Membrane permeability changes
III. Ganglion cells are excited
IV. Bipolar cells are depolarized
V. Action potential (impulse) is transmitted by optic nerves to visual cortex
VI. Potential differences are generated in the photoreceptor cells
VII. Light energy causes a change in shape of rhodopsin, leading to the dissociation of retinal (an aldehyde
of vitamin-A) from opsin (a protein)
VIII. Structure of opsin is changed
Choose the correct sequence Show Answer


Q491) Nerve cells do not divide because they do not have Show Answer


Q492) Vitreous humour is
Show Answer


Q493) Sense of smell is perceived by Show Answer


Q494) In the central nervous system Show Answer


Q495) Meissner’s corpuscles occur in Show Answer


Q496) The wall of the human eyeball is composed of Show Answer


Q497) Thermoregulatory centre of human body is associated with Show Answer


Q498) The axons transmit nerve impulses from the cell body to a Show Answer


Q499) Grey matter of the brain is
I. present outside the white matter
II. matter containing medullated nerve fibres
III. grey in colour
IV. matter containing cell bodies
Which of the statements mentioned above are correct? Show Answer


Q500) In the central nervous system, myelinated fibres form the …, while the non-myelinated fibre cells
form the …… Show Answer


Q501) Pneumotaxic centre which can moderate the functions of the respiratory rhythm centre is present
at Show Answer


Q502) Arrange the following events in a correct order that lead to the formation of an auditory impulse in human
ears from the codes given below
I. Vibration is transferred from the malleus to the incus and then to stapes
II. Basiliar membrane moves up and down
III. Nerve impulse is transmitted by cochlear nerve to auditory cortex of brain for impulse analysis and
recognition
IV. Sound waves pass through ear canal
V. Stereocilia of hair cells of organ of Corti rub against tectorial membrane
VI. Sound waves causes ear drum to vibrate
VII. Nerve impulse is generated
VIII. Vibrations move from fluid of vestibular canal to the fluid tymapanic canal
IX. Membrane at oval window vibrates Show Answer


Q503) Which is the largest body cell? Show Answer


Q504) Which one of the following pairs of structures distinguishes a nerve cell from other types of cell? Show Answer


Q505) The medulla contains centres which control Show Answer


Q506) Cranium is the protective covering of Show Answer


Q507) The number of cranial nerves in frog and man is Show Answer


Q508) The chemical used by doctors to dilate pupil for examination is Show Answer


Q509) Identify the wrong pair Show Answer


Q510) A synapse is formed by the membrane of Show Answer


Q511) A neuron is said to be in resting state when,
I. it is not conducting any impulse
II. plasma membrane is electrically positive outside and negative inside
III. the nerve fibre is stimulated mechanically or electrically
IV. plasma membrane is negative outside and positive inside
The correct option is
Show Answer


Q512) Patients suffering from cholera are given a saline drip because Show Answer


Q513) Which part of retina consists of only cones? Show Answer


Q514) Following are some nerves. Categorise them as afferent, efferent and mixed nerves according to their
nature and than choose the correct option from the codes given below
I. Trigeminal nerves
II. Occulomotor nerves
III. Olfactory nerves
IV. Auditory cranial nerves
V. Hypoglossal cranial nerves
VI. Spinal accessory cranial nerves
VII. Optic nerves
VIII. Abducens nerves
IX. Pathetic nerves
X. Glossopharyngeal nerves
XI. Vagus cranial nerves
XII. Spinal nerves
XIII. Facial nerves Show Answer


Q515) The glands, which help on absorbing odoriferous substances to stimulate olfactory nerve are Show Answer


Q516) Which of the following is motor nerve? Show Answer


Q517) True about electrical synapses
I. pre and postsynaptic neurons are in very close proximity
II. pre and postsynaptic neurons are separated by synaptic cleft
III. impulse transmission is very fast
IV. electrical synapses are common in our system
Select the correct option Show Answer


Q518) If frog’s brain is crushed, even than its leg moves on pinpointing. It called as Show Answer


Q519) Which of the following statements is correct about the nodes of ranvier? Show Answer


Q520) Inner part of cerebral cortex is referred as
Show Answer


Q521) Brains acts as the …A… and …B… system. Here, A and B refer to
Show Answer


Q522) Old age far sightedness is a defect of eye in which
Show Answer


Q523) Muller’s fibres occurs in Show Answer


Q524) Memory is the responsibility of Show Answer


Q525) Intercellular communication in multicellular organism occurs through Show Answer


Q526) Which of the following statements are is correct?
I. Dendrites are long fibre, with branched distal end
II. Axons are short fibres which arise from the cell body
III. Cell body of a neuron contains cytoplasm, nucleus with cell organelles and Nissl’s granules
IV. The dendrites transmits nerve impulses away from the cell body to a synapse
The correct option is
Show Answer


Q527) The rods and cones of the retinal layer of eye are modified Show Answer


Q528) The order of the three layers of cells in the retina of human eye from inside to outside is
Show Answer


Q529) Synaptic vesicles contains chemicals called
Show Answer


Q530) The neurons may be Show Answer


Q531) The outermost covering of brain is Show Answer


Q532) In humans, tympanic membrane (ear drum) separates lympanic cavity from Show Answer


Q533) At their resting stage, the body cells exhibit a potential of -5 to -100 mV known as Show Answer


Q534) Our paired eyes are located in sockets of the skull called
Show Answer


Q535) For the maintenance of ionic gradients across the resting membrane, the sodium-potassium pump
transports Show Answer


Q536) Comprehension of spoken and written words take place in the region of Show Answer


Q537) Excessive stimulation of vagus nerve in humans may lead to Show Answer


Q538) Pupil, is the aperture surrounded by the Show Answer


Q539) In which direction, cristae of rabbit ear helps in maintaining balance? Show Answer


Q540) The inner parts of cerebral hemispheres and a group of associated deep structures like amygdala,
hippocampus, etc. form a complex structure called
Show Answer


Q541) Rhodopsin is also known as visual Show Answer


Q542) What are the two types of nervous system cells? Show Answer


Q543) Which of the following statements is true? Show Answer


Q544) Nerve cells do not possess Show Answer


Q545) Which of the following is an example of conditioned reflex? Show Answer


Q546) Select the correct arrangement of neural organization, according to the increasing degree of complexity Show Answer


Q547) ‘Organ of Jacobson’ helps in Show Answer


Q548) The nerve cells exercise its control by sending electrical signals called Show Answer


Q549) Synapse is the connection between Show Answer


Q550) A person went to ophthalmologist. He had a problem in reading because he was not able to
Show Answer


Q551) The size of pupil is controlled by the Show Answer


Q552) Which of the following is correct regarding electrical synapses?
I. Pre and postsynaptic membrane neurons are in very close proximity at electric synapse
II. Electric current are involved in the transmission of impulses
III. Transmission of an impulse across electrical synapses is very similar to impulse conduction along a
single axon
IV. Impulse transmission is always faster in electric synapse than that across a chemical synapse
V. Electrical synapses are rare in our system
The correct option is Show Answer


Q553) Which of the following is present in rod cells and useful in night vision? Show Answer


Q554) …….. nerve fibre is enclosed by a Schwann cell that do not form a myelin sheath around the axon
Show Answer


Q555) In the resting stage of a neuron, concentration gradient generates due to Show Answer


Q556) Scala vestibuli, scala media and scala tympani of human ear contains Show Answer


Q557) An action potential in the nerve fibre is produced when positive and negative charges on outside
and the inside of the axon membrane are reversed because Show Answer


Q558) Nissl’s granules are found in Show Answer


Q559) Which statements are wrong?
I.Synaptic cleft of neurons secrete adrenaline.
II.Myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around
the axon.
III.Non-myelinated nerve fibre is enclosed by a Schwann cell that does not form myelin sheath.
IV.Spinal cord and cranial nerves are made of non-myelinated nerve fibres.
Of the four statements Show Answer


Q560) The central information processing organ of our body is Show Answer


Q561) Which of the following statements are correct for cones of human eye?
I. Cones are responsible for daylight vision
II. Cones are responsible for colour vision
III. Cones are responsible for photopic vision
Choose the correct option Show Answer


Q562) During synaptic excitation Show Answer


Q563) Which of the following is correct for the pairs of cervical nerves and number of cervical vertebrae
respectively?
Show Answer


Q564) The nerve fibre in its resting stage is
Show Answer


Q565) Movement of tongue muscle is controlled by
Show Answer


Q566) Alimentary canal is supplied by Show Answer


Q567) The retina of nocturnal birds contain Show Answer


Q568) What is the space between arachnoid and piamater? Show Answer


Q569) Choose the odd pair out in the following. Show Answer


Q570) Sympathetic nervous system controls Show Answer


Q571) Dendrites are Show Answer


Q572) Sensation of stomach pain is due to
Show Answer


Q573) …A… is attached to the tympanic membrane and the …B… is attached to the oval window of the cochlea
Choose the correct option for A and B Show Answer


Q574) In which part of the brain, satiety centres is present? Show Answer


Q575) Which of the following is correct for lens focusing while seeing distant object? Show Answer


Q576) The cell body of neuron contains certain granular bodies called
Show Answer


Q577) Pinna Show Answer


Q578) Light sensitive cells of eye are present in
Show Answer


Q579) Which of the following statements are incorrect?
I. The space between cornea and lens is filled with watery fluid
II. Rhodopsin is red protein, hence called visual red
III. The anterior transparent portion of choroid is called cornea
IV. When all cones are stimulated equally, a sensation of no light (dark) is produced
Choose the correct option Show Answer


Q580) In Hydra, neural organization is comprises of Show Answer


Q581) Schwann cell is found around Show Answer


Q582) The human ear is equipped to register sounds of frequencies between
Show Answer


Q583) I. The endocrine system provides chemical integration through hormones
II. The neural system provides an oragnised network of point to point connection for a quick coordination
III. The neural organization is very complex in lower invertebrates
IV. The human neural system includes CNS and PNS
Select the correct statements Show Answer


Q584) The tract of nerve fibres which connects the cerebral hemisphere is Show Answer


Q585) Eustachian canal connects Show Answer


Q586) Which part of CNS mainly controls the reflex? Show Answer


Q587) Respiratory control centre is Show Answer


Q588) Olfactoreceptors are Show Answer


Q589) In nerve fibre, the impulses transmits quickly due to Show Answer


Q590) Labyrinth, fluid-filled inner ear consists of Show Answer


Q591) The sound producing organ of bird is Show Answer


Q592) Reflex arc in the nervous system means Show Answer


Q593) Salivation in man is under the control of Show Answer


Q594) Static equilibrium is maintained by Show Answer


Q595) Human ears perform sensory functions. These are Show Answer


Q596) When a neuron is in resting state, i.e., not conducting any impulse, the axonal membrane is Show Answer


Q597) In humans, gustatoreceptors are found in Show Answer


Q598) ‘Pons Varolii’ connects the Show Answer


Q599) There are different types of cones to human eye that responds to Show Answer


Q600) Unipolar neurons can be seen in the Show Answer


Q601) Which is thickened to form organ of Corti? Show Answer


Q602) Which of the following cells are associated with identification of colours in bright light?
Show Answer


Q603) Synapses are of two types namely …A… synapses and …B… synapses. Here A and B refers to Show Answer


Q604) Select the correct statements Show Answer


Q605) Damage to hearing is caused by sound which exceeds Show Answer


Q606) Gustatoreceptors are
Show Answer


Q607) Choroid becomes thick in the anterior part of eye to form the
Show Answer


Q608) A man is admitted in a hospital. He is suffering from an abnormally low body temperature, loss of
appetite and extreme thirst. His brain scan would probably show a tumour in Show Answer


Q609) Eustachian tube connects …A… cavity with …B… Choose the correct option for A and B Show Answer


Q610) The autonomic nervous system has control over Show Answer


Q611) How many pairs of cranial nerves originate from the brain of rabbit? Show Answer


Q612) The gelatinous, elastic membrane covering the sensory hair cells of the human ear is known as Show Answer


Q613) The joint between axon of a neuron and the dendrite of the next is called Show Answer


Q614) Reflex action is controlled by
Show Answer


Q615) Cerebellum portion of brain is Show Answer


Q616) Choose the correct option from the codes given below
I. Nearly 50% of all brain cells are neuroglia
II. Oligodendrocytes plays a role in the maintenance of the blood brain barrier
III. Microglia engulf microbes and cellular debris
IV. Astrocytes, oligodendrocytes and microglia, are three different types of neuroglial cells Show Answer


Q617) The bones lie inferior to the parietal bones and meet them at the squamous sutures is
Show Answer


Q618) Which part of brain is associated with strong emotions? Show Answer


Q619) The human brain is well protected by the Show Answer


Q620) A wave of action potential is termed as
Show Answer


Q621) The sensations of different colours in human eye is produced due to the combination of Show Answer


Q622) Olfactory smell area is present in Show Answer


Q623) The function of vagus nerve innervating the heart is to Show Answer


Q624) Aqueduct of Sylvius occurs in Show Answer


Q625) Nerve impulse initiates with the movement of Show Answer


Q626) Given below is a table comparing the effects of sympathetic and parasympathetic nervous system
for four features (a-d).which one feature is currently described? Show Answer


Q627) What is the location of hypothalamus? Show Answer


Q628) Which is a bridge between nervous system and endocrine system?
Show Answer


Q629) Broca’s area is connected with Show Answer


Q630) Myelinated fibres of the tract of pons forms Show Answer


Q631) The PNS includes Show Answer


Q632) 31 pairs of spinal nerves are known in man. Select the option which shows its correct classification into
different groups Show Answer


Q633) Cerebellum and medulla together constitutes
Show Answer


Q634) Hindbrain includes Show Answer


Q635) The complex system of the inner ear associated with maintenance of body balance is Show Answer


Q636) The one way or unidirectional transmission of nerve impulse in nerve cells is due to the presence
of Show Answer


Q637) Post-ganglionic nerve fibres of sympathetic system are Show Answer


Q638) The membrane, which cover the brain and spinal cord is/are called Show Answer


Q639) Which one of the following is not a part of ear? Show Answer


Q640) The …A… is a structure located on the …B… which contains …C… that acts as auditory receptors
Choose the correct option for A, B and C Show Answer


Q641) The posterior part of the retina, which is just opposite to the lens is Show Answer


Q642) Corpus callosum connects Show Answer


Q643) The innermost layer of the human eye is Show Answer


Q644) Which function will be lost due to damage of occipital lobe? Show Answer


Q645) Neuron is composed of Show Answer


Q646) Trigeminal nerve in frog is of Show Answer


Q647) Vomiting centre is located in the Show Answer


Q648) Mouth becomes watery when we look on the delicious food is due to Show Answer


Q649) The sequence of ear ossicles from outside to inside is Show Answer


Q650) In rhodopsin, the vitamin present is Show Answer


Q651) In human eyes, colour perception is done by Show Answer


Q652) Path of reflex action is Show Answer


Q653) Statement 1: Neurons regulates the endocrine activity but not vice − versa
Statement 2: Endocrine gland regulates neural activity and neural activity regulates endocrine gland Show Answer


Q654) Statement 1: Arrival of an impulse at the axon terminal, stimulates the release of neurotransmitters in
the synaptic cleft
Statement 2: These neurotransmitters are responsible for the opening of ion channels Show Answer


Q655) Statement 1: During physical exercise, the demand of oxygen is increased, which competes the lungs to
increase the rate of respiration and heart to increase the blood flow for proper supply of
oxygen
Statement 2: Coordination is the process through which two or more organs interact and complement
the functions of each other Show Answer


Q656) Statement 1: The presynaptic neuron transmits an impulse (action potential) across the synaptic cleft
to the postsynaptic neuron
Statement 2: For the transmission of impulses at synapses, chemicals called neurotransmitters are
responsible
Show Answer


Q657) Statement 1: Iris muscles show both dilation as well as constriction of pupil
Statement 2: It is sympathetic and parasympathetic nervous system which have antagonistic functions Show Answer


Q658) Statement 1: The cerebral cortex is referred to as the white matter of the brain
Statement 2: It is due to the high concentration of neuron cell bodies in it Show Answer


Q659) Statement 1: Organ of Jacobson is well developed in snakes
Statement 2: Organ of Jacobson is well developed in humans Show Answer


Q660) Statement 1: Humans can sense changes in the environment
Statement 2: Sensory organs detect all types of changes in environment Show Answer


Q661) Statement 1: Neuroglial cells are known as the packing cells of brain
Statement 2: A type of neuroglial cells forms the myelin sheath around axon Show Answer


Q662) Statement 1: Neurons are excitable cells
Statement 2: The membrane of neurons in a depolarized state is responsible for excitability Show Answer


Q663) Statement 1: The membrane of a neuron is polarized
Statement 2: Ion channels on the neural membrane are selectively permeable to different ions Show Answer


Q664) Statement 1: Cerebral of cortex appears white
Statement 2: It is because of the myelin sheath covering of the tracts Show Answer