InterviewSolution
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InterviewSolution
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.
| 51. |
Endolymph has good quantity ofA. `Na^(+)`B. `Ca^(2+)`C. `Mg^(2+)`D. `Cl^(-)` |
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Answer» Correct Answer - B Endolymph has good quantity of Ca. |
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| 52. |
Vibrations of fenestra ovalis are transmitted toA. Perilymph of scala vestibuliB. Perilymph of scala tympaniC. Endolymph of scala mediaD. Endolymph of scala vestibuli |
| Answer» Correct Answer - A | |
| 53. |
Which of the following part in ear is filled with endolymph ?A. Scala vestibuliB. Scala tympaniC. Median canalD. Helicotrema |
| Answer» Correct Answer - C | |
| 54. |
Internal ear is filled withA. perilymphB. endolymphC. lymphD. both (a) and (b) |
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Answer» Correct Answer - A Internal ear consists of two divisions : (i)bony labyrinth, filled with fluid called perilymph (ii)membranous labyrinth, filled with fluid called endolymph |
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| 55. |
A small passage that permits continuity between scala vestibuli and scala tympani isA. helicotremaB. Eustachian tubeC. cochleaD. vestibule |
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Answer» Correct Answer - A Both the scala vestibuli and scala tympani are connected with each other at the apex of the cochlea by a small canal called helicotrema. |
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| 56. |
If dorsal nerve of spinal cord is broken down then its effect isA. no impulse is transmittedB. impulse is transmitted but slowlyC. impulse is transmitted fastD. no effect on impulse |
| Answer» Correct Answer - A | |
| 57. |
If dorsal nerve of spinal cord is broken down then its effect isA. no impulse is transmittedB. impulse is transmitted but slowlyC. impulse is transmitted but slowlyD. no effecton impulse |
| Answer» Correct Answer - A | |
| 58. |
Nerve axon takes part inA. Receiving impulseB. Transformation of energyC. Conduction of impulseD. Providing energy for impulse transmission |
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Answer» Correct Answer - C Nerve axon takes part in conduction of impulse. |
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| 59. |
Cerebrum is in direct contact withA. DuramaterB. ArachnoidC. PiamaterD. Enterocoel |
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Answer» Correct Answer - C Inside the skull, the brain is covered by cranial menings consisting of an outer layer called duramater, a very thin middle layer called arachnoid and an inner layer (which is in contact with the brain tissue) called piamater. |
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| 60. |
At resting stage nerve cell hasA. Low `K^(+)` outside and high `Na^(+)` insideB. High `K^(+)` inside and high `Na^(+)` outsideC. High `K^(+)` inside and low `Na^(+)` outsideD. High `K^(+)` outside and low `Na^(+)` inside |
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Answer» Correct Answer - B When a neuron is not conducting any impulse, i.e. resting, the axonal membrane is comparatively more permeable to potassium ions `(K^(+))` and nearly impermeable to sodium ions (`Na^(+)`). Similarly, the membrane is impermeable to negatively charged proteins present in the axoplasm. Consequently, the axoplam inside the axon contains high concentration of `K^(+)` and negatively charged proteins and low concentration of `Na^(+)`. In contrast, the fluid outside the axon contains a low concentration of `K^(+)`, a high concentration of `Na^(+)` and thus form a concentration gradient. |
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| 61. |
Action potential of a nerve cell isA. `- 60` mvB. `- 80` mvC. `+ 20` mvD. `+60` mv |
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Answer» Correct Answer - C Action potential of a nerve cell is + 20 mv. |
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| 62. |
In myasthenia gravis, acetylcholineA. Receptors on motor end plate are reducedB. Secretion from nerve terminals is reducedC. Esterase activity is prohibitedD. Secretion from nerve terminals is enhanced |
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Answer» Correct Answer - A In myasthenia gravis, acetylocholine receptors on motor end plate are reduced. |
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| 63. |
In Myasthenia gravis acetylcholineA. Receptors on motor end plate are reducedB. Secretion from nerve terminals is reducedC. Esterase activity is prohibitedD. Secretion from nerve terminals is enhanced |
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Answer» Correct Answer - A In myasthenia gravis, acetylocholine receptors on motor end plate are reduced. |
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| 64. |
Which one is the function of parasympathetic nervous system in mammalsA. Acceleration of heart beatB. Constriction of pupilC. Stimulation of sweat glandsD. Contraction of arrector pilli muscles |
| Answer» Correct Answer - B | |
| 65. |
In Myasthenia gravis acetylcholineA. Receptors on motor end plate are releasedB. Secretion from were terminals is reducedC. Esterase activity is inhibitedD. Secretion from nerve terminals is enhanced |
| Answer» Correct Answer - a | |
| 66. |
Which of the following membranes given us the ability to discriminate different pitches of sound ? (a) Membrane covering the round window (b) Tympanic membrane (c ) Tectorial membrane (d) Basilar membrane |
| Answer» Basilar membrane gives us the ability to discriminate different pitches of sound. This is because the different regions of the basilar membrane vibrate best at different frequencies of the sound, from which the brain infers the pitch. | |
| 67. |
A man is admitted toa hospital. He is suffering from an abnormally low body temperature, loss of appetitie and extreme thirst. His brains scan would probably show a tumor inA. PonsB. CerebellumC. Medulla oblongataD. Hypothalamus |
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Answer» Correct Answer - D A man is suffering from abnormally low body temperature, loss of appetite and extreme thirst. His brain scan is liable to show tumour in hypothalamus. |
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| 68. |
A 35-year-old female patient presents with weakness and spasticity in the left lower extremity, visual impairment and throbbing in her left eye. MRI confirms areas of demyelination in the anterior corpus callosum. Which of the following cells are specifically targeted in her condition ?A. MicrogliaB. OligodendrocytesC. AstrocytesD. Schwann cells |
| Answer» Correct Answer - B | |
| 69. |
A teenage girl presents for evaluation of hearing loss in her tight ear. She has a history of at least 12 episodes of otitis media as a child, at least one time she perforated her eardrum. Her hearing loss is most likely due toA. Conductive deafnessB. Sensorineural deafnessC. Central deafnessD. Tinnitus |
| Answer» Correct Answer - A | |
| 70. |
Vagus nerve effectsA. voice productionB. peristalsisC. respectory movementsD. all of these |
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Answer» Correct Answer - D Vagus nerve innervates the pharynx, larynx, oesophagus, stomach, lungs, heart and intestines. It is a mixed nerve. It controls the visceral sensations and visceral movements (peristalsis, sound production , respiratory movements, heart beat). |
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| 71. |
Vagus nerve is aA. mixed Xth spinal nerveB. mixed Xith cranial nerveC. mixed Xth thoracic nerveD. mixed Xth cranial nerve |
| Answer» Correct Answer - D | |
| 72. |
What is not true about the sympathetic nervous system ?A. It has functions antagonistic to those of parasympathetic systemB. It has bilateral ganglionated cordsC. It has longer post ganglionic fibresD. It has stimulatory influence on all involuntary organs, it supplies |
| Answer» Correct Answer - D | |
| 73. |
Digitalis is a drug that block the `Na^(+)//K^(+)` ATPase and causes which of the following consequences ?A. Decreased intracellular calcium concentrationB. Decreased intracellular sodium concentrationC. Decreased intracellular potassium concentrationD. increased extracellular sodium concentration |
| Answer» Correct Answer - C | |
| 74. |
Smulation of target organs by the parasympathetic vagus nerve would exert which of the following effects ?A. Acetylcholine inhibition of the GI tractB. Norepinephrine-stimulated increase in the heart rateC. Norepinephrine inhibition of pancreatic secretionD. Acetycholine-stimulated increase in pancreatic secretion |
| Answer» Correct Answer - D | |
| 75. |
In a cross section of the spinal cord A, B, C, D and E represent A. A - white matter, B - grey matter, C - dorsal root, D - ventral root, E - spinal nerveB. A - white matter, B - grey matter, C - ventral root, D - dorsal root, E - spinal nerveC. A - grey matter, B - white matter, C - ventral root, D - dorsal root, E - spinal nerveD. A - white matter, B - grey matter, C - spinal nerve, D - ventral root, E - dorsal root |
| Answer» Correct Answer - A | |
| 76. |
The cerebal cortex containsA. Sensory areasB. Motor areasC. Association areasD. All of the above |
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Answer» Correct Answer - D The cerebral cortex contains motor areas, sensory areas and large regions that are neither clearly sensory not motor in function. These regions called as the association areas are responsible for complex functions like intersensory associations, memory and communication. CNS is mainly made up of association neurons. |
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| 77. |
In a similarity with photographic camera, retina acts asA. ShutterB. LensC. DiaphragmD. Film |
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Answer» Correct Answer - D In a similarity with photographic camera, retina acts as film. |
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| 78. |
Anosmia is :A. Related to ear diseaseB. Related to eye diseaseC. Related to tongueD. Loss of sense of smell |
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Answer» Correct Answer - D |
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| 79. |
The visual acuity is the greatest atA. FoveaB. Blind spotC. PupilD. Ciliary body |
| Answer» Correct Answer - A | |
| 80. |
Which of the following results in the generation of potential differences in the photoreceptor cells of eyes ?A. Conversion of retinal into opsinB. Conversion of opsin into retinalC. Dissociation of the retianl from opsinD. Dissociation of the opsin from retinol |
| Answer» Correct Answer - C | |
| 81. |
Generation of action potential in stage of |
| Answer» Correct Answer - Exciting stage | |
| 82. |
Chemicals by which nerve impulses transmit through one neuron by another are |
| Answer» Correct Answer - Neuro transmitters | |
| 83. |
Fill in the blanks. 1. A nerve impulses is (a.)......... from one neuron to another through junctions called (b.) ........ 2. (c.)...............of an impulse across electrical synapses is very similar to impulse(d.) .............along a single axon.A. a-conducted, b-NMJ, c-conduction, d-transmissionB. a-transmitted, b-NMJ, c-transmission, d-conduction.C. a-conducted, b-synapses, c-conduction, d-transmissionD. a-transmitted, b-synapses, c-transmission, d-conduction |
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Answer» Correct Answer - D 1. A nerve impulse is transmitted from one neuron to another through junctions called synapses. 2. Transmission of an impulse across electricla synapses is very similar to impulse conduction along a single axon. |
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| 84. |
Junctions from which impluse is transmitted through one neuron to another are known as |
| Answer» Correct Answer - Synapse | |
| 85. |
A patient with symptoms of tremor, halting speech and an irregular gait may have experienced trauma to theA. cerebrumB. ponsC. CerebellumD. thalamus |
| Answer» Correct Answer - C | |
| 86. |
Pain is experienced byA. CaloreceptorB. AlgesireceptorC. ProprioceptorD. Hygroreceptor |
| Answer» Correct Answer - B | |
| 87. |
Feelings of anger, pain and rage are experienced throughA. basal gangliaB. Occipital lobeC. Limbic systemD. Reticular system |
| Answer» Correct Answer - C | |
| 88. |
In brain, the region for perception of pain is located inA. Frontal lobeB. Parietal lobeC. Occipital lobeD. Temporal lobe |
| Answer» Correct Answer - B | |
| 89. |
Somesthetic or post central area is responsible forA. Initiation of motor impulses for voluntary musclesB. Initiation of motor impulses for involuntary musclesC. Perception of pain, touch and temperatureD. Coordination of speech |
| Answer» Correct Answer - C | |
| 90. |
The hippocampus converts information fromA. Short term memory to long term memoryB. Long term memory to short term memoryC. Aggression to remembering fearD. Does not convert information |
| Answer» Correct Answer - A | |
| 91. |
The primary visual area is located inA. Frontal lobeB. Parietal lobeC. Occipital lobeD. Temporal lobe |
| Answer» Correct Answer - C | |
| 92. |
The primary visual area is located inA. Temporal lobeB. Occipital lobeC. Frontal lobeD. Parietal lobe |
| Answer» Correct Answer - B | |
| 93. |
The decoding and interpretation of visual information is carried out by which pary of the brainA. CerebellumB. Frontal lobeC. Parietal lobeD. Temporal lobe |
| Answer» Correct Answer - e | |
| 94. |
Action potential of a nerve cells is created byA. `Ca^(2+)`B. `K^(+)`C. `Na^(+)`D. `Cl^(-)` |
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Answer» Correct Answer - C When a stimulus is applied at a site (e.g., point A ) on the polarised membrane, the membrane at the site A becomes freely permeable to `Na^(+)`. This leads to a rapid influx of `Na^(+)` followed by the reversal of the polarity at that site, i.e. the outer surface of the membrane becomes negatively charged and the inner side becomes positively charged. The polarity of the membrane at the site A is thus reversed and hence depolarised. The electrical potential difference across the plasma membrane at the site A is called the action potential, which is in fact termed as a nerve impulse. |
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| 95. |
During the propagation of a nerve impluse, the action potential results from the movement ofA. `K^(+)` ions from intracellular fluid to extracellular fluidB. `Na^(+)` ions from extracellular fluid to intracellular fluidC. `K^(+)` ions from extracellular fluid to intrecellular fluidD. `Na^(+)` ions from intracellular fluid to extracellular fluid |
| Answer» Correct Answer - B | |
| 96. |
The action potential of a nerve cells isA. 45 mVB. 55 nVC. 80 mVD. 75 mV |
| Answer» Correct Answer - a | |
| 97. |
Which one of the following does not act as a neutrotransmitterA. NorepinephrineB. Cortisone/TyrosineC. AcetylcholineD. Epinephrine |
| Answer» Correct Answer - b | |
| 98. |
Which one of the following does not act as a neutrotransmitterA. AcetylcholineB. EpinephrineC. NorepinephrineD. Cortisone |
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Answer» Correct Answer - D Cortisone does not act as a neurtransmitter. Cortisone is a corticosteriod that is itself biologically inactive and is formed naturally in the adrenal gland (adrenal cortex) from the active hormone cortisol. Cortisol promotes the synthesis and storage of glucose and is important in the normal response to stress, suppresses inflammation and regulates deposition of fat in body. Acetylcholine is neurotransmitter secreted from the nerve endings. Epinephire and norpinephire are secreted from the medulla of adrenal gland the these also act as neurotransmitter. |
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| 99. |
Which one of the following statements is correct?A. Neurons regulate endocrine activity, but not vice versaB. Endocrine glands regulate activity and nervous sstem regulates endocrine glandsC. Neither hormones control activity nor the neurons control endocrine activityD. Endocrine glands regulate neural activity, but not vice versa |
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Answer» Correct Answer - A The autonomous nervous system regulates the secretion of glands whereas, the glands do not regulate the nervous system. |
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| 100. |
Which one of the follwing pairs of structures distinguishes a nerve cell from other types of cellA. Nucleus and miochondiraB. Perikaryon and dendritesC. Vacuoles and fibersD. Flagellum and medullary sheath |
| Answer» Correct Answer - B | |