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/
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

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
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

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
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

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

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

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
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

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