Practice Test


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


2) Power of regeneration is lowest in:


3) Nervous system is concerned with two important functions:


4) A neuron is:


5) Synapse is a term to denote the:


6) The sympathetic and parasympathetic systems constitute:


7) The central nervous system inclueds:


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


9) Brain in frog is contained in cranium, enveloped by connective tissue membrane called:


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


11) The inner membrane surrounding brain is:


12) Pineal stalk, a slender tubular structure arises from:


13) Optic chiasm is formed by the crossing over of two:


14) Hypothalamus forms the floor and lower part of:


15) Two-thirds of entire brain is made of:


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


17) Cell bodies of neurons bringing afferent information into spinal cord are located in:


18) In brain, crura cerebri is a structure made of:


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


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


21) Olfactory lobes of human are:


22) Nissl granules in the nerve cell bodies are actually:


23) The anterior choroid plexus is located in or near the:


24) The pineal body is considered as:


25) If cerebral hemispheres of frog are removed, it:


26) In human brain, corpora quadrigemina represents:


27) The cavity of spinal cord is called:


28) Brain develops from:


29) The function of central nervous system:


30) Corpora striata is a part of:


31) Foramen of Monro in brain is an aperture between:


32) Which part of the brain controls muscular co-ordination?


33) A deep longitudinal fissure divides the cerebrum:


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


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


36) The medulla oblongata continues as spinal cord which runs in the canal of the:


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


38) Regulation of heart beat and respiration is controlled by:


39) The volume of blood supplied to the brain per miunte is:


40) Third ventricle of rabbit's brain is called:


41) Learning is related to which part of human brain?


42) Thermo-regulatory centre in the body is:


43) The ganglion from which trigeminal nerve arises is called:


44) The maximum number of meninges in animals is/are:


45) Foramen of Magendie is found in:


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


47) The sensory neuron transmits patterns of action potentials that indicate:


48) A receptor that detects the position of parts of the body is called:


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


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


51) Plasticity in a nervous system is reflected in animal:


52) Impulses leave a neuron via the:


53) The myelin sheath around the axons of some vertebrate neurons:


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


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


56) The ventricles of cerebral hemispheres communicate through:


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


58) The optic nerves in brain leave the cranium by the:


59) The oculomotor nerve arises from crura cerebri and innervates:


60) The facial nerve arises form medulla oblongata and it is:


61) Pneumogastric or vagus nerve is both sensory and motor in nature and innervates:


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


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


64) In one second nerve impulse travels about:


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


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


67) Aqueduct of Sylvius or iter connects:


68) Mammalian brain can be distinguished externally from amphibian brain by:


69) Filum terminale is the name given to:


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


71) The spinal nerve are:


72) Which of the following is purely a motor nerve?


73) The 9th cranial nerve is called:


74) Auditory nerve innervates:


75) Sciatic nerve in frog is originated from a plexus formed by:


76) The optic nerve is responsible for:


77) Difference in reflex and reflex action lies in:


78) The number of spinal nerves in frog is:


79) Among the following which is concerned with neurosecretion in a vertebrate?


80) Which one of the following is smallest nerve that innervates cephalic region only?


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


82) The eighth cranial nerve carries impulse from:


83) Which of the following statements is correct?


84) Optic chiasm is principally concerned with:


85) Which of the following cranial nerves is purely motor in function?


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


87) When movements occur without the intervention of the brain they are called:


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


89) The duration of absolute refractory period of a nerve fibre is:


90) The hormone adrenaline is same as the neurotransmitter:


91) The term arachnoid is derived from arachine and means:


92) Which one of the following nerves is not related to the movement of eye ball?


93) Central canal of frog lined by ependyma is a continuation of:


94) Which one is a function of parasympathetic nervous system in mammals?


95) Which one of the following is the effect of parasympathetic nervous system:


96) Cerebral hemisphere of frog has a cavity called:


97) In frog the nature of glossopharyngeal and vagus nerve is:


98) Stimulation of vagus nerve:


99) At the nerve synapses:


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


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


102) When sympathetic system acts on a particular organ, its action is:


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


104) Excitability and conductivity are the outsatnding properties of:


105) Dendrities transmit the impulses to:


106) Resting potential of nerve cells is:


107) Nerve is:


108) Myelinated fibres are nerve fibres which are:


109) If a frog is pithed and an electric shock is applied to its leg:


110) The transmission of nerve impulse is a:


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


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


113) When nerve is stimulated. It is polarized. Depolarization is maintained by the following ion:


114) During resting condition the membrane of axon is:


115) The part of ommatidium that is functionally similar to retina is:


116) The simplest form of nerve network is:


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


118) Acetylcholine is most closely associated with which of the following systems?


119) The sensory ganglion concerned with spinal reflex lies in:


120) Sodium pump of an axon is operative at:


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


122) Acetylcholine is:


123) Action potential is:


124) During refractory period:


125) Electrical impulse of the eye recorded are:


126) Neurotransmitters are compounds which:


127) The 3rd, 6th, and 11th cranial nerves are:


128) Which of the following cranial nerves is present in rabbit but absent in frog?


129) Nervous system was first of all originated in:


130) Sympathetic nerves in mammals arise from:


131) At the nerve cell membrane, the equilibrium potential for potassium is:


132) The "spike" phase of action potential lasts for roughly:


133) One nerve is stimulated, it is polarized. Depolarization is maintained by the following ion.


134) Conduction of nerve impulse along a myelinated nerve is:


135) Somesthetic area is located in:


136) The ends of bipolar neurons in retina of man touch:


137) Glands of Swammerdam are rich in:


138) Sensory neuron in a vertebrate reflex are located in:


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


140) Which one of the following is function of pons Varolii?


141) Cervical plexus is formed by:


142) Presynaptic membrane permits:


143) Heart beat is regulated by:


144) The refractory centre which regulates respiration is located in:


145) Which brain structure in rabbit is directly vision related?


146) Most of the neurons of our body are:


147) Body co-ordination is exhibited by:


148) The sodium-potassium pump:


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


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


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


152) An action potential, for a given axon, is:


153) Which of the following increase when an action potential is initiated?


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


155) A nerve impulse leaves a neuron via:


156) Synapse is a gap between adjacent:


157) A nerve which conveys impulses from a tissue to nerve centre is called:


158) The speed at which impulses are conducted increases with:


159) Saltatory conduction of nerve impulses occurs in:


160) Synaptic fatigue is due to:


161) Secretion of parasympathetic nerve endings is:


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


163) In brain centre for thirst is situated in:


164) Nerve impulse travels by steps:


165) Simple two neuron reflex are involved:


166) Slow neurotransmission is mediated by:


167) Which of the following nerves is absent in frog?


168) Which of the nerves functions more like a tract of brain than a nerve?


169) Which of the following is not strictly considered a part of neuron?


170) The vagus nerve is cranial nerve numbering:


171) The Nissl granules of nerve cells are made up of:


172) Centre for sense of smell is:


173) Nerve related to diaphragm is:


174) 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:


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


176) Centre of thirst and hunger is located in:


177) Common feature amongst acetylcholine, noradrenalineand serotonin is:


178) At resting stage nerve cell has:


179) Nerve axon takes part in:


180) Preganglionic sympathetic fibres are:


181) Arbor vitae is composed of:


182) Action potential has what value?


183) Venom of Cobra affects:


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


185) Structure connected with vision in Rabbit is:


186) Which one of the following is a purely motor nerve?


187) Refractory period is during:


188) Node of Ranvier is the place where:


189) Which of the following cranial nerve controls the movement of eye ball?


190) Which of the following is a part of human brain?


191) A bipolar neuron has:


192) These processes occur during repolarization of nerve fibre:


193) Touch on the right side stimulate neurons on:


194) Respiratory centre of brain is sensitised by:


195) Cerebrospinal fluid is present:


196) 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:


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


198) The primary visual area is located in:


199) Choroid plexus is a network of:


200) Injury to vagus nerve in human is not likely to affect:


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


202) Which of the following is mixed nerve?


203) 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?


204) One of the examples of the action of the automomous nervous system is:


205) 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:


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


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


208) Tree of life is:


209) Arbor vitae is part of:


210) Which has H - shaped grey matter?


211) Carnial nerve (in pairs) in frog and man are


212) In parasympathetic nervous system which of the following is released?


213) Hypothalamus does not control:


214) The brachial plexus are formed by these spinal nerves:


215) Which one of the following does not act as a neurotransmitter?


216) How many pairs of spinal nerve are found in human?


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


218) A typical value of resting membrane potential is:


219) Bowman's glands are located in the:


220) 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?


221) During the propagation of a nerve impulse, the action potential results from the movement of:


222) The potential maintained across the neuron membrane during the resting state is:


223) Which of the following is a function of nervous system?


224) One of the following lack neurons:


225) If neurons are clustered into groups in the CNS, they are termed:


226) Bipolar neurons are located in the:


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


228) When a neuron is not sending a signal at rest, the plasma membrane is:


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


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


231) What is the trigger zone for a particular neuron?


232) Action potential is also known as:


233) Energetically saltatory conduction:


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


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


236) 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?


237) The all-or-none principle states that:


238) The loss of positive ions from the interior of a neuron produces:


239) Which of the following describe the largest amount of the human cerebral cortex?


240) Which statement about the autonomic nervous system is true?


241) Which statement is not true?


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


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


244) 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


245) Which one is correct about the physiology of eye?


246) Part of ear where sound is transduced is


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


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


249) The reflex pathway comprises


250) The highly specialized cells called neurons can


251) 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


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


253) The band of fibre which joins corpora quadrigemina to cerebellum is called


254) What kind of neural organization can be seen in lower vertebrates?


255) The movement of the nerve impulse across synaptic cleft is primarily


256) During the conduction of nerve impulse, the repolarization occurs with the


257) Which of the following are the properties of neural system?


258) Which part of brain controls intellectual ability?


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


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


261) Photoreceptor cells that contains the light sensitive proteins are called


262) The specific region of hypothalamus, responsible for physiological sweat secretion is


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


264) A structure of neuron comprises of


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


266) The adult human eyeball is nearly a ….. structure


267) The sympathetic and parasympathetic neural system combines to form


268) Choose the correct non-protein amino acid from the given option.


269) Which of the following parts of a neuron is covered by fatty sheath?


270) The system that transmits impulses from CNS to skeletal muscles is


271) The pressure on either sides of the ear drum gets equalized by


272) Which is a part of spinal cord?


273) 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


274) For quick coordination, our neural system is organized through


275) Saltatory conduction occurs in


276) Action of lysozyme is


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


278) Skeletal muscles are controlled by


279) Yellow spot of eye is known for


280) Middle ear of humans contains ossicles, i. e.,


281) Mechanism of neural coordination involves


282) Which converts short time memory into long time remembrance?


283) 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?


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


285) Which is not a reflex action?


286) A nerve impulse is transmitted from one neuron to another through the junctions called


287) The afferent nerve fibres transmit impulse


288) Which of the damaged cells cannot be repaired?


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


290) Identify the basic functions of neural system


291) How many laminae are present in the grey matter of spinal cord?


292) Number of cranial nerves in frog


293) Reflex action is controlled by


294) Vitreous chamber, which is filled by vitreous humor is the space


295) Organ of Corti is found in


296) During repolarisation of nerve


297) 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


298) Which of the following neuron is also called excitor neuron?


299) Brain and spinal cord, combinely form the


300) Nerve cells are the part of


301) Spinal cord is protected by


302) 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?


303) On the basis of nature of nerve fibres, the nerves are


304) Which of the following system provides the fastest means of communication within the body?


305) The correct sequence of meetings of brain from outside to inside is


306) Which of the following features show antagonism over a particular organ?


307) The cutaneous plexus and the papillary plexus consists


308) The velocity of action potential propagation


309) Anterior choroid plexus is present on the


310) Retina of eye is analogous to which part of camera?


311) …….. is not involved in knee-jerk reflex


312) Synaptic knob is bulb-like structure which is present


313) Autonomic nervous system affects


314) The PNS comprises of


315) 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


316) The respiratory rhythm centre is present in the


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


318) Maintenance of the ionic gradients across the resting membrane is done by the


319) How many pairs of cranial nerves are found in humans?


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


321) Ependymal cells


322) In the blind spot, where the optic nerves leave the eyes


323) Association areas of the brain are


324) Study of structure, functions and disease of the nervous system is called


325) 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


326) Which is not a part of hindbrain?


327) 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


328) Brain depends on blood for the supply of


329) In the axon of motor nerve fibre, the nerve impulse travels


330) Rods and cones are present in


331) Synaptic vesicle is found in


332) Which one of the following is an example of negative feedback loop in humans?


333) The brain can be divided into


334) Under prolonged starvation, brain receives energy from


335) Coiled portion of the labyrinth is called


336) Pneumotaxic centre is present in


337) Sympathetic nervous system induces


338) 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


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


340) Which of the following is known as the site of information processing and control?


341) The human neural system comprises


342) Association areas are regions found in


343) A neuron is a …… structure


344) Photoreceptor cells of human eye are


345) Parkinsonism is related with


346) Protein found in eye lens is


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


348) Which part of the human brain is largest?


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


350) The most appropriate definition for neuroglial cells are that they are


351) Brain controls the


352) Myelin sheath is derived from


353) The forebrain consists of


354) In humans, pneumotaxic centre is present in


355) 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


356) Which centre is stimulated during increase in body temperature?


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


358) Which one is correct regarding the ear and hearing?


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


360) In dark adaptation,


361) Dreaming occurs in


362) Node of Ranvier is found in


363) Aqueous and vitreous humour are divided by


364) Cerebellum is concerned with the


365) The TV cranial nerve is


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


367) Light falls on retina and its amount is regulated by


368) Blind spot is called to because of


369) If dorsal nerve of spinal cord is broken down then


370) 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


371) 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


372) Three major components of human eyeball are


373) Which of the following is not correctly matched?


374) When we do physical exercises, the energy demand is increased for


375) 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


376) Olfactory lobes of man are


377) Ampulla of Lorenzini are thermoreceptors which are found in


378) Vertebrate brain differentiates from


379) The choroid layer of human eye is


380) 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


381) Which cranial nerve gives out a number of branches?


382) 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


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


384) When we do physical exercises, the energy demand is


385) Which part of human brain is concerned with the regulation of body temperature?


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


387) Thalamus is a structure wrapped by cerebrum, is


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


389) Ultra violet radiation from sun causes which of the following disorder of eyes?


390) 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


391) The vestibular apparatus of human ear is composed of


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


393) Human tears contains an enzyme


394) 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


395) Structurally what are olfactory nerve cells?


396) Which of the following is cochlear duct?


397) Pneumotaxic centre is present in the


398) Which of the following is the part of midbrain of rabbit?


399) Medulla oblongata is originated from


400) The forebrain develops into


401) Which of the following statement is correct for Iter?


402) ‘Adaptation’ of eyes in dark is due to


403) Which of the following statements is correct regarding receptors in the skin?


404) Nerve impulse travels faster in


405) If an organism has more rods, it will


406) The cell body of neuron contains of


407) Connection between axon and dendrite is


408) On postsynaptic membrane, the new potential developed is


409) The cranial nerve that goes to the external rectus muscle is


410) Number of spinal nerves in rabbit is


411) The supporting and nutritive cells found in the brain are


412) Which of the following substances leads to the inhibition of central nervous system?


413) Which part of human ear is concerned with hearing?


414) Fovea in the eye is a central pit in the yellowish pigmented spot called


415) Which foramen is paired in mammalian brain?


416) Dendrites transmit impulses towards the


417) Centre for thinking and learning is present in which part of brain?


418) The reflex arc, which is made of two neurons is known as


419) Bipolar neurons are found in the


420) During the conduction of a nerve impulse, the action potential results from the movement of


421) Bipolar neurons occur in


422) Which one of the following statements is correct?


423) Cerebellum of brain is responsible for


424) Cornea transplant in humans is almost never rejected. This is because


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


426) Synaptic knob possesses


427) 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?


428) Which of the following is not related to the autonomic nervous system?


429) The wall of the eyeball is composed of ….. layers


430) The total amount of cerebrospinal fluid in humans is


431) 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


432) The amount of CSF in the cranial cavity is


433) Inside the skull, the brain is covered by


434) The rods contains a purplish-red protein called


435) Which of the following prevents internal reflection of light within the eye?


436) Aqueous chamber which is filled by aqueous humour is the space


437) Human ear can be divided into


438) Which is an example of conditioned reflex?


439) 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


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


441) Which is the visible coloured portion of the eye?


442) The anterior portion of sclera is called


443) Arachnoid membrane is


444) Cells of Schwann are associated with


445) Reflex action involves


446) In humans, tympanic membrane is composed of connective tissues which is covered with


447) At blind spot


448) Wax gland present in the human ear canal is called


449) Yellow spot is found in


450) Function of ear ossicles in human is


451) Sclera of human eye is composed of


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


453) Involuntary activities of the body are controlled by


454) The cavity in the region of diencephalon in the brain of rabbit is called


455) Which one is correct about the focusing of the eye?


456) The part of the brain where the centre for hunger and thirst is located is


457) 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


458) Internal ear is filled with


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


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


461) Which of the following statement is incorrect?


462) Taste area lies in the


463) Functions of association areas in cerebral cortex includes


464) In which of the following, Nissl’s granules are found in?


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


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


467) Cerebral hemispheres of rat are connected by


468) Multipolar neurons are found in the


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


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


471) The black pigment layer in human eye, that reduces internal reflection is located in


472) Which of the following is not an organ of central nervous system?


473) Dilatation of pupil takes place by


474) Ina myelinated neuron, two adjacent myelin sheaths are separated by gaps called


475) The gaps between two adjacent myelin sheaths is called


476) Sympathetic nerve accelerates heart beat due to


477) Which of the following does not act as a neurotransmitter?


478) Odd nerve is


479) Axons can be


480) Schwann cells, form a myelin sheath around the


481) Which of the following nerves is purely motor nerve?


482) Choroid plexus functions to produce


483) 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


484) Alzheimer’s disease in human is associated with the deficiency of


485) Which of the following is a neuroglial cell?


486) Outer ear of humans consists of


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


488) At the neuromuscular function


489) Lipofucsin granules are found in


490) Brain stem is formed by


491) Corti’s organs is present in


492) 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


493) Nerve cells do not divide because they do not have


494) Vitreous humour is


495) Sense of smell is perceived by


496) In the central nervous system


497) Meissner’s corpuscles occur in


498) The wall of the human eyeball is composed of


499) Thermoregulatory centre of human body is associated with


500) The axons transmit nerve impulses from the cell body to a


501) 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?


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


503) Pneumotaxic centre which can moderate the functions of the respiratory rhythm centre is present
at


504) 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


505) Which is the largest body cell?


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


507) The medulla contains centres which control


508) Cranium is the protective covering of


509) The number of cranial nerves in frog and man is


510) The chemical used by doctors to dilate pupil for examination is


511) Identify the wrong pair


512) A synapse is formed by the membrane of


513) 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


514) Patients suffering from cholera are given a saline drip because


515) Which part of retina consists of only cones?


516) 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


517) The glands, which help on absorbing odoriferous substances to stimulate olfactory nerve are


518) Which of the following is motor nerve?


519) 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


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


521) Which of the following statements is correct about the nodes of ranvier?


522) Inner part of cerebral cortex is referred as


523) Brains acts as the …A… and …B… system. Here, A and B refer to


524) Old age far sightedness is a defect of eye in which


525) Muller’s fibres occurs in


526) Memory is the responsibility of


527) Intercellular communication in multicellular organism occurs through


528) 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


529) The rods and cones of the retinal layer of eye are modified


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


531) Synaptic vesicles contains chemicals called


532) The neurons may be


533) The outermost covering of brain is


534) In humans, tympanic membrane (ear drum) separates lympanic cavity from


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


536) Our paired eyes are located in sockets of the skull called


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


538) Comprehension of spoken and written words take place in the region of


539) Excessive stimulation of vagus nerve in humans may lead to


540) Pupil, is the aperture surrounded by the


541) In which direction, cristae of rabbit ear helps in maintaining balance?


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


543) Rhodopsin is also known as visual


544) What are the two types of nervous system cells?


545) Which of the following statements is true?


546) Nerve cells do not possess


547) Which of the following is an example of conditioned reflex?


548) Select the correct arrangement of neural organization, according to the increasing degree of complexity


549) ‘Organ of Jacobson’ helps in


550) The nerve cells exercise its control by sending electrical signals called


551) Synapse is the connection between


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


553) The size of pupil is controlled by the


554) 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


555) Which of the following is present in rod cells and useful in night vision?


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


557) In the resting stage of a neuron, concentration gradient generates due to


558) Scala vestibuli, scala media and scala tympani of human ear contains


559) 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


560) Nissl’s granules are found in


561) 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


562) The central information processing organ of our body is


563) 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


564) During synaptic excitation


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


566) The nerve fibre in its resting stage is


567) Movement of tongue muscle is controlled by


568) Alimentary canal is supplied by


569) The retina of nocturnal birds contain


570) What is the space between arachnoid and piamater?


571) Choose the odd pair out in the following.


572) Sympathetic nervous system controls


573) Dendrites are


574) Sensation of stomach pain is due to


575) …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


576) In which part of the brain, satiety centres is present?


577) Which of the following is correct for lens focusing while seeing distant object?


578) The cell body of neuron contains certain granular bodies called


579) Pinna


580) Light sensitive cells of eye are present in


581) 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


582) In Hydra, neural organization is comprises of


583) Schwann cell is found around


584) The human ear is equipped to register sounds of frequencies between


585) 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


586) The tract of nerve fibres which connects the cerebral hemisphere is


587) Eustachian canal connects


588) Which part of CNS mainly controls the reflex?


589) Respiratory control centre is


590) Olfactoreceptors are


591) In nerve fibre, the impulses transmits quickly due to


592) Labyrinth, fluid-filled inner ear consists of


593) The sound producing organ of bird is


594) Reflex arc in the nervous system means


595) Salivation in man is under the control of


596) Static equilibrium is maintained by


597) Human ears perform sensory functions. These are


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


599) In humans, gustatoreceptors are found in


600) ‘Pons Varolii’ connects the


601) There are different types of cones to human eye that responds to


602) Unipolar neurons can be seen in the


603) Which is thickened to form organ of Corti?


604) Which of the following cells are associated with identification of colours in bright light?


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


606) Select the correct statements


607) Damage to hearing is caused by sound which exceeds


608) Gustatoreceptors are


609) Choroid becomes thick in the anterior part of eye to form the


610) 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


611) Eustachian tube connects …A… cavity with …B… Choose the correct option for A and B


612) The autonomic nervous system has control over


613) How many pairs of cranial nerves originate from the brain of rabbit?


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


615) The joint between axon of a neuron and the dendrite of the next is called


616) Reflex action is controlled by


617) Cerebellum portion of brain is


618) 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


619) The bones lie inferior to the parietal bones and meet them at the squamous sutures is


620) Which part of brain is associated with strong emotions?


621) The human brain is well protected by the


622) A wave of action potential is termed as


623) The sensations of different colours in human eye is produced due to the combination of


624) Olfactory smell area is present in


625) The function of vagus nerve innervating the heart is to


626) Aqueduct of Sylvius occurs in


627) Nerve impulse initiates with the movement of


628) 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?


629) What is the location of hypothalamus?


630) Which is a bridge between nervous system and endocrine system?


631) Broca’s area is connected with


632) Myelinated fibres of the tract of pons forms


633) The PNS includes


634) 31 pairs of spinal nerves are known in man. Select the option which shows its correct classification into
different groups


635) Cerebellum and medulla together constitutes


636) Hindbrain includes


637) The complex system of the inner ear associated with maintenance of body balance is


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


639) Post-ganglionic nerve fibres of sympathetic system are


640) The membrane, which cover the brain and spinal cord is/are called


641) Which one of the following is not a part of ear?


642) 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


643) The posterior part of the retina, which is just opposite to the lens is


644) Corpus callosum connects


645) The innermost layer of the human eye is


646) Which function will be lost due to damage of occipital lobe?


647) Neuron is composed of


648) Trigeminal nerve in frog is of


649) Vomiting centre is located in the


650) Mouth becomes watery when we look on the delicious food is due to


651) The sequence of ear ossicles from outside to inside is


652) In rhodopsin, the vitamin present is


653) In human eyes, colour perception is done by


654) Path of reflex action is


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


656) 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


657) 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


658) 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


659) 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


660) 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


661) Statement 1: Organ of Jacobson is well developed in snakes
Statement 2: Organ of Jacobson is well developed in humans


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


663) 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


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


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


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