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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
The reflex pathway comprisesA. one afferent neuronB. one efferent neuronC. one afferent and one efferent neuronD. one afferent and one receptor neuron |
| Answer» Correct Answer - C | |
| 152. |
Cranial nerves supplying eyes areA. 3, 4, 5B. 4, 6, 7C. 4, 5, 6D. 3, 4, 6 |
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Answer» Correct Answer - D Cranial nerves supplying eyes are 3, 4 and 6. |
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| 153. |
Select the correct sequence of menings from inside to outsideA. duramater `rarr` arachnoid `rarr` piamaterB. arachnoid `rarr` duramater `rarr` piamaterC. piamater `rarr` duramater `rarr` arachnoidD. duramater `rarr` piamater `rarr` arachnoid |
| Answer» Correct Answer - A | |
| 154. |
A characteristic of human cornea isA. Absence of blood circulationB. Causes cataract in old ageC. Has lacrimal gland for secretion of tearsD. Secreted by conjuctiva and glandular layer |
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Answer» Correct Answer - A A characteristic of human cornea is absence of blood circulation. |
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| 155. |
Which set of the ions are required during conduction of the nerve impulseA. Na and CaB. Ca and MgC. Na and KD. Na and Mg |
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Answer» Correct Answer - c |
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| 156. |
The rate of conduction in myelnated fibre of a mammal is very high becauseA. Synapses are less frequentB. Action potential is faster and numerousC. Action potential jumps from node to nodeD. Membrane is depolarised faster |
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Answer» Correct Answer - c |
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| 157. |
When we move from dark to light, we fail to see for some time but soon the visibility become normal. It isA. AccommodationB. AdaptationC. PhotoperiodismD. Mutation |
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Answer» Correct Answer - B When we move from dark to light, we fail to see for some time but soon the visibility become normal. It is adaptation. |
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| 158. |
When we move from dark to light, we fail to see for some time but soon the visibility become normal. It isA. accommodationB. adaptationC. mutationD. photoperiodism |
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Answer» Correct Answer - B It takes some time for rhodospins to split into scotopsin and retinal (bleaching) and release of transmitter passing nerve impulse via bipolar and ganglion cells to the optic nerves. This is a case of adaptation. It differs from accommodation which is a reflex mechanism by which the focus of the eye change to make the images of distant and near objects sharp on the retina. |
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| 159. |
When we move from dark to light, we fail to see for some time but soon the visibility become normal. It isA. AccommodationB. AdaptationC. MutationD. Photoperiodism. |
| Answer» Correct Answer - B | |
| 160. |
Assertion : Nerves arising from the spinal cord are said to be sensory nerves Reason : A nerve confining only sensory nerve fibres is called a sensory nerveA. Both Assertion and Reason are true and Reason is the correct explanation of AssertionB. Both Assertion and Reason are true, but Reason is not the correct explanation of AssertionC. Assertion is true, but Reason is falseD. Assertion is false, but Reason is true |
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Answer» Correct Answer - A Sensory nerve fibres conduct nerve impulses from the peripheral tissues to the central Nervous System (CNS) to evoke sensations like touch, pain, heat, cold, taste, vision and hearing. If a nerve contains only motor fibres, it is called a motor nerve. Its sole role is to conduct nerve impulses from the CNS to some muscles or glands to control their activities. Nerves arising from the spinal cord are neither called sensory nerves nor motor nerves, instead they are called mixed nerves because these nerves carry simultaneously both sensory and motor nerve fibres and serve both sensory and motor function. |
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| 161. |
All the nerves of the body associated with the CNS (brain and spinal cord), comprised inA. Peripheral neural systemB. Somatic neural systemC. Autonomic neural systemD. Sympathetic neural system |
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Answer» Correct Answer - A All the nerves of the body associated with the CNS (brain and spinal cord), comprised in peripheral neural system. |
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| 162. |
The …a… nerve fibre transmit impules from tissue/organs to the CNS and the …b… nerve fibres transmit regulatory impules from the CNS to the concerned peripheral tissue/organ.A. a - afferent, b - efferentB. a - efferent, b - afferentC. a - sympathetic, b - parasympatheticD. a - parasympathetic, b - sympathetic |
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Answer» Correct Answer - A The afferent nerve fibre transmit impulse from tissues/organs to the CNS and the efferent nerve fibres transmit regularly impules from the CNS to the concerned peripheral tissues/organs. |
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| 163. |
The thermoregulatory centre is situated in or The control of blood sugar level, osmoregulation and thermoregulation are the functio of of The appetite and satiety centres in the brain of man are located in the region of theA. Spinal cordB. Pituitary bodyC. CerebellumD. Hypothalamus |
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Answer» Correct Answer - D Hypothalamus contains higher nerve centres for temperature regulation, hunger, thirst and emotional reactions. |
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| 164. |
Sympathetic nervous system increasesA. hearbeatB. secretion of salivaC. secretion of digestive juiceD. all of these |
| Answer» Correct Answer - A | |
| 165. |
Consider the diagram of synapse (I) The numbered label indicate the location of the receptor moleucles (II) The number points to a synaptic vesicles (III) The number points of neurotrnsmitter (IV) The number points to synaptic cleft A.B.C.D. |
| Answer» Correct Answer - D | |
| 166. |
Which one of the following is odd one out?A. AcetylcholineB. GlycineC. dopamineD. Chemical messengers |
| Answer» Correct Answer - D | |
| 167. |
Assertion : The chemical stored in the synaptic vesicles are termed as neurotransmitters. Reason : Synaptic vesicles release these chemicals in the synaptic cleft.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false. |
| Answer» Correct Answer - B | |
| 168. |
string synaptic transmission of nerve impulse, neurotransmitter (p) is released from synptic vesicles by the section of ions (Q). Choose the correct P and QA. P = acetylcholine, `Q = Ca^(++)`B. P = acetylcholine, `Q = Na^(+)`C. P = GABA, `Q = Na^(+)`D. P = cholinesterase, `Q = Ca^(++)` |
| Answer» Correct Answer - A | |
| 169. |
Receptor sites for neurotransmitters are present onA. Membranes ofsynaptic vesiclesB. Pre-synaptic membraneC. Tips of axonsD. Post -synaptic membrane |
| Answer» Correct Answer - D | |
| 170. |
How many receptor sites are present in `Na^(+)-K^(+)` pump for binding `Na^(+)` ions?A. 2B. 3C. 1D. None of these |
| Answer» Correct Answer - B | |
| 171. |
Consider the diagram of synapse (I) The numbered label indicate the location of the receptor moleucles (II) The number points to a synaptic vesicles (III) The number points of neurotrnsmitter (IV) The number points to synaptic cleft A.B.C.D. |
| Answer» Correct Answer - d | |
| 172. |
Sonar system is found only inA. BatsB. WhalesC. Bats and whalesD. Otter |
| Answer» Correct Answer - c | |
| 173. |
Receptor sites for neuotransmitters are presents onA. Membrane of synaptic vesiclesB. Pre-synaptic membraneC. Tips of axonsD. Post-synaptic membrane |
| Answer» Correct Answer - d | |
| 174. |
Receptor sites for neuotransmitters are presents onA. Pre-synaptic membraneB. Tips of axonsC. Post-synaptic membraneD. Membrane of synaptic vesicles |
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Answer» Correct Answer - C Receptor sites for neurotransmitters are present on post-synaptic membrane. |
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| 175. |
In human brain, number of glial cells isA. Significantly greater than number of neuronsB. Significantly lower than the number of neuronsC. Roughly equal to number of Schwan cellsD. Roughly equal to number of neurons |
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Answer» Correct Answer - D In human brain number of glial cells is roughly equal to number of neurons. |
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| 176. |
Consider the given diagram and identify "A" A. Medulla oblongataB. CerebellumC. MidbrainD. Pons |
| Answer» Correct Answer - B | |
| 177. |
Which of the following cranial nerves innervates heart, stomach and lungs or which of the cranial nerve is mixedA. VagusB. AccessoryC. TrigeminalD. Trochlear |
| Answer» Correct Answer - A | |
| 178. |
Which part of the human brain controls the urge for eating and drinking ?A. ForebrainB. MidbrainC. HindbrainD. Spinal cord |
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Answer» Correct Answer - B Hypothalamus is a part of forebrain that controls the urge for eating and drinking. |
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| 179. |
Which part of brain controls intellectual ability ?A. Frontal lobeB. Parietal lobeC. Temporal lobeD. Occipital lobe |
| Answer» Correct Answer - A | |
| 180. |
The part of the brain which controls vision, touch, hearing, motion and memory isA. cerebrumB. cerebellumC. medulla oblongataD. all of these |
| Answer» Correct Answer - A | |
| 181. |
Blood-brain barrier is formed byA. Microglial cellsB. AstrocytesC. OligodendrocytesD. Ependymal cells |
| Answer» Correct Answer - B | |
| 182. |
The blood-brain barrierA. Consists of both anatomical and physiological factorsB. Regulates to some extent the passage of substances from the blood to the interstitial fluid of the brainC. Is anatomically related to the formation of tight juctions between adjacement capillary endothelial cellsD. All of the above are correct |
| Answer» Correct Answer - d | |
| 183. |
The given figure is that of the human brain Identify the part that controls intelligence and memory is labelledA. IVB. IIIC. IID. I |
| Answer» Correct Answer - D | |
| 184. |
The given diagram is the lateral view of the human brain, parts are indicated by alphabets. Select the answer in which these alphabets have been correctly paired with the parts which they indicate A. A-Frontal lobe, B-Temporal lobe, C-Cerebellum, D-Medulla oblongata, E-parietal lobeB. A-Temporal lobe, B-parietal lobe , C-Cerebrum, D-Medulla oblongata, E-Frontal lobeC. A-Frontal lobe, B-Temporal lobe, C-Cerebrum, D-Medulla oblongata, E-Occipital lobeD. A-Temporal lobe, B-parietal lobe , C-Cerebellum, D-Medulla oblongata, E-Frontal lobe |
| Answer» Correct Answer - A | |
| 185. |
The given figure is that of the human brain Identify the part that controls intelligence and memory is labelledA. IVB. IIIC. IID. I |
| Answer» Correct Answer - d | |
| 186. |
Following is the figure of a saggital section of a human brain.Match the labelled parts with the respective statements given below and select the correct option. (i)Consists of fibre tracts that interconnect left and right hemispheres (ii)Secretes a hormone melatonin (iii)Alcohol interferes with the function of this part (iv)Contains centres which control respiration , cardiovascular reflexes and gastric secretions. A. `{:(A,B,C,D),("(ii)","(iii),(i)","(iv)"):}`B. `{:(A,B,C,D),("(iv)","(i),(iii)","(ii)"):}`C. `{:(A,B,C,D),("(iii)","(ii),(iv)","(i)"):}`D. `{:(A,B,C,D),("(i)","(iv),(ii)","(iii)"):}` |
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Answer» Correct Answer - D A-Corpus callosum B-Medulla oblongata C-Pineal Body D-Cerebellum |
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| 187. |
Moleules that bar charged groups of opposite polarity are known areA. ZwitterionsB. CationsC. AnionsD. Negative ions |
| Answer» Correct Answer - A | |
| 188. |
Brain depends on blood for the supply ofA. Oxygen and ATPB. Oxygen and electrolytesC. Oxygen and glucoseD. ATP and glucose |
| Answer» Correct Answer - C | |
| 189. |
The given diagram is that of human brain Which functions is performed by the part labelled `III` in the given diagramA. Maintaining postureB. Controlling learingC. Regulation of hertbeatD. Regulation of body temperature |
| Answer» Correct Answer - C | |
| 190. |
The venom of cobra affects theA. Digestive systemB. Circulatory systemC. Nervous systemD. Respiratory system |
| Answer» Correct Answer - C | |
| 191. |
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 .A. on the blind spotB. behind the retinaC. in front of the retinaD. on the yellow spot |
| Answer» Correct Answer - C | |
| 192. |
Assertion:This PNS comprises of all the nerves of the body associated with CNS. Reason:PNS is the site of information processing and control.A. If both assertion and reason are true and reason is the correct explanation of assertion.B. If both assertion and reason are true but reason is not the correct explanation of assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false. |
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Answer» Correct Answer - C The CNS includes the brain and the spinal cord and is the site of information processing and control.The PNS comprises of all the nerves of the body associated with the CNS. |
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| 193. |
The jumping of action potential form node to node (of Ranvier) in a fibre is calledA. All or none pricipleB. Threshold stimulasC. Nodal conditionD. Saltatory conduction |
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Answer» Correct Answer - d In white fibres (medullated) impule jumps from node to node, it is called soltaory conduction. |
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| 194. |
The ventricals of the brain are filled withA. Cerebro-spinal fluidB. LymphC. BloodD. Amniotic fluid |
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Answer» Correct Answer - a The cerebrospinal fluid is secreted by anterior choroid plexus and posterior choriod plexus and is found inside the ventricles of the brain and central canal of the spinal cord. |
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| 195. |
The opening of tympanic cavity isA. fenestra ovalisB. fenestra rotundaC. scala mediaD. both (a) and (b) |
| Answer» Correct Answer - D | |
| 196. |
The tympanic cavity is connected with the pharynx byA. ColumellaB. Ear ossiclesC. Eustachian tubeD. Fallopian tube |
| Answer» Correct Answer - C | |
| 197. |
hearing apparatus located on basilar membrane is |
| Answer» Correct Answer - organ of corti | |
| 198. |
High frequency sound waves vibrate the basilar membraneA. Near the oval windowB. Near the helicotremaC. In the middle of cochleaD. From oval window to helicotrema |
| Answer» Correct Answer - a | |
| 199. |
Maculae are present inA. semicircular canalsB. utriculus and lagenaC. utriculusD. utriculus and sacculus |
| Answer» Correct Answer - D | |
| 200. |
Among the following charachteristics, indicate the correct combinations applicable to conditional reflex P. Acquired by partice or learing Q. Not acquired by birth R. Does not abolish by lack of pratice S. Participation of cerebreal cortex T. Originates spontaneouslyA. P, Q, RB. P, Q, SC. P, R, TD. Q, R, T |
| Answer» Correct Answer - b | |