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.
| 651. |
Potential difference across resting membrane is negatively charged. This is due to differential distribution of the following ions.A. `Na^(+)and K^(+)ions`B. `CO^(3++) and CI^(-)ions`C. `Ca^(++) and Mg^(++)ions`D. `Ca^(+4) and CI^(-)ions` |
| Answer» Correct Answer - a | |
| 652. |
Which would you call potential diference in an axon at rest and an axon in action?A. Depolarisation and action potential respectivelyB. Resting potential and action potential respectivelyC. Action potential and resting potential respectivelyD. Repolarisation and depolarisation respectively |
| Answer» Correct Answer - B | |
| 653. |
Which of the following are the three initial development regions of the brain?A. Telencephalon, Prosencephalon, MesencephalonB. Rhombencephalon, Prosencephalon, MesencephalonC. Metencephalon, Myelencephalon, ProsencephalonD. Prosencephalon, Diencephalon, Mesencephalon |
| Answer» Correct Answer - B | |
| 654. |
Approximately, how many neurons are present in a human brain?A. 10 millionB. 100 billionC. 10 billionD. 1 million |
| Answer» Correct Answer - B | |
| 655. |
Eye muscles are innervated byA. Oculomotor, abducens and vagusB. Oculomotor, trochlear and abducensC. Oculomotor, abducens and facialD. Oculomotor, facial and vagus |
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Answer» Correct Answer - B Eye muscles are innervated by oculomotor, trochlear and abducens. |
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| 656. |
Statoacoustic receptors are located inA. CerebrumB. CerebellumC. Middle earD. Internal ear |
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Answer» Correct Answer - D Statoacoustic receptors are located in internal ear. |
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| 657. |
Eustachian tube connectsA. External ear with middle earB. External ear with internal earC. Middle ear with pharynxD. Middle ear with internal ear |
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Answer» Correct Answer - C An Eustachian tube connects the middle ear cavity with the pharynx (Nasopharynx). The Eustachian tube helps in equalising the pressure on either sides of the ear drum. |
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| 658. |
Arbor vitae isA. Tree-like structure in cerebrumB. Tree of life in cerebellumC. End part of spinal cordD. Branched dendrites of a neuron |
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Answer» Correct Answer - B Arbor vitae is tree of life in cerebellum. |
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| 659. |
Which of the following cranial nerves can regulate heartbeat?A. XB. lXC. VlllD. Vll |
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Answer» Correct Answer - A Xth cranial nerve is vagus or phenumogastric nerve which originates from lateral side of medulla oblongata behind IX cranial nerve. It is a mixed nerve, its sencory fibres innervate to receptor present in the wall of visceral organs. Whereas, its motor fibres innervates to muscles in the wall of visceral organs-like heart, alimmentray canal, trachea, lungs, kidneys, genital tracts etc. It also regulates heartbeat. |
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| 660. |
One function of parasympathetic nervous system isA. contraction of hair musclesB. stimulation of sweat glandsC. acceleration of heartbeatD. constriction of pupil |
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Answer» Correct Answer - D Parasympathetic nervous system involves conservation of energy and brings about relaxation, comfort, pleasure etc, at the time of rest. Another function of this system is that during emergency or stress while SNS dilates pupil for more light, PNS constricts the pupil for more light, PNS constricts the pupil for its normal condition. Whereas, sympathetic nervous system involves expenditure of energy and increases the defence system of body against adverse conditions, so, it operates during stress, pain fear and anger. |
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| 661. |
Movement of nerve impulse across synaptic cleft is primarilyA. Physical eventB. Electrical eventC. Chemical eventD. Biological event |
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Answer» Correct Answer - C Movement of nerve impulse across synaptic cleft is primarily chemical event. |
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| 662. |
During impulse tranmission, nerve permeability increases forA. `Na^(+)`B. `Cl^(-)`C. `H^(+)`D. `Ca^(2+)` |
| Answer» Correct Answer - A | |
| 663. |
The sensory receptors that respond to sound, develop receptor potentials when theirA. hair are bentB. pigments absorb pressureC. surface proteins are altered by a change in pH.D. sodium-potassium pumps become deactivated. |
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Answer» Correct Answer - A The organ of Corti is a structure located on the basilar membrane which contains hair cells that act as auditory receptors.Movements of the basilar membrane bend the hair cells, pressing them against the techorial membrane.As a result, nerve impulses are generated in the associated afferent neurons.These impulses are transmitted by the afferent fibres via auditory nerves to the auditory cortex of the brain, where the impulses are analysed and the sound is recognised. |
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| 664. |
Conjunctiva of eye is present inA. vitreous chamberB. aqueous chamberC. ciliary bodyD. front of cornea |
| Answer» Correct Answer - D | |
| 665. |
Which of the following results from activation of sympathetic nervous system?A. Pupil dilationB. Trachea dilationC. Vasodilation in brainD. All of these |
| Answer» Correct Answer - D | |
| 666. |
Which of them is not performed by sympathetic nervous system?A. Pupil dilationB. Increases RBC countC. Trachea dilationD. Pupil constrician |
| Answer» Correct Answer - D | |
| 667. |
Secretion of which of the follwing is under neurosecretory nerve axonsA. PinealB. Adrenal cortexC. Anterior pituitaryD. Posterior pituitary |
| Answer» Correct Answer - c | |
| 668. |
Most body organs are innervated byA. parasympathetic division of the PNSB.C.D. |
| Answer» Correct Answer - B | |
| 669. |
Which of the following would not result from sympathetic stimulation?A. Increase renin secretionB. Inhibit peristalisC. Dilates bronchiolesD. all of the above |
| Answer» Correct Answer - D | |
| 670. |
Sympathetic nervous system is also known asA. cranialB. craniosacralC. thoracolumbarD. none of these |
| Answer» Correct Answer - C | |
| 671. |
Action potential isA. Decremental phenomenonB. Does not obey all or noneC. `K^(+)` goes from ECF to ICFD. Always same for any one neuron |
| Answer» Correct Answer - D | |
| 672. |
The adrenal medulla is a mass of neurons with all of the following characteristics exceptA. Its products are tyrosine derivedB. It releases epinephrineC. It is responsible for the production of cortisol and aldosteroneD. It is located above the kidney |
| Answer» Correct Answer - C | |
| 673. |
Which of the following is/are controlled by the human brain ? a. Balance of the body b. Circadian rhythm of the body c. Human behaviour d. Functioning of heart and kidneysA. Only dB. a and dC. a, b and cD. a, b , c, d |
| Answer» Correct Answer - D | |
| 674. |
Neuromotor transmitter between two nerves at a synapse isA. AcetylcholineB. sympathinC. ATPD. insulin |
| Answer» Correct Answer - A | |
| 675. |
Which part of nervous system is activated under stress ?A. Autonomous nervous systemB. Parasympathetic nervous systemC. Sympathetic nervous systemD. Spinal cord |
| Answer» Correct Answer - C | |
| 676. |
Which part of nervous system is activated under stress ?A. Whole autonomous nervous systemB. Parasympathetic nervous systemC. Sympathetic nervous systemD. Spinal cord |
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Answer» Correct Answer - C Sympathetic nervous system is activated under stress. |
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| 677. |
Which is activated in stress conditionA. SympatheticB. ParasympatheticC. SomaticD. Whole ANS |
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Answer» Correct Answer - A Sympathetic nervous system increases delence system of body against advense conditions. It is active in stress condition. Such as pain fear and anger. |
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| 678. |
The centre for sence of smell in brain isA. CerebellumB. CerebrumC. Olfactorty lobesD. Midbrain |
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Answer» Correct Answer - C Olfactory membrane overhangs the sensory hair in the scala media. Its properties are to determine the patterns of vibration of sound waves. |
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| 679. |
Read the assertion and reson carefully to mark the correct option out of the options given below: Assertion : Medulla oblongata causes reflex actions like vomiting, coughing and sneezing Reason : It has many nerve cells which control autonomic reflexes.A. If both the assertion and the reason are true and the reason is a correct explanation of the assertionB. If both the assertion and the reason are true but the reason is a not correct explanation of the assertionC. If the assertion is true but the reason is falseD. If both the assertion and reason are false |
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Answer» Correct Answer - A Medulla oblongata consists of accumulation of nerve cells act as vital centres of many autonomic reflexes like vomiting. Coghing and sneezing. |
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| 680. |
Which function is performed by the medulla oblongata?A. Maintaining postureB. Controlling learningC. Regulation of heartbeatD. Regulation of body temperature |
| Answer» Correct Answer - C | |
| 681. |
The autonomic nervous system has control overA. Reflex actionB. Skeletal musclesC. Sense organsD. Internal organs |
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Answer» Correct Answer - D Autonomic nervous system regulates and coordinates involuntary activities like heart beating, homeostasis, body temperature, breathing, gut peristalsis and secretion of glands. |
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| 682. |
Read the assertion and reson carefully to mark the correct option out of the options given below: Assertion : Anterior lobe of pituitary is attached to hypothalamus by a vein Reason : This attachment is done through a portal vein.A. If both the assertion and the reason are true and the reason is a correct explanation of the assertionB. If both the assertion and the reason are true but the reason is a not correct explanation of the assertionC. If the assertion is true but the reason is falseD. If both the assertion and reason are false |
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Answer» Correct Answer - B Anterior lobe of pitultary is called pars distails. It is attached to hypothalmus by hypophyseal portal vein this portal vein called hypothalamo-hypophyseal portal vein. |
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| 683. |
All spinal nerves areA. MotorB. SensoryC. MixedD. None of these |
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Answer» Correct Answer - C All spinal nerves are sensory and motor both (mixed). |
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| 684. |
In man which one of the following cranial nerve is associated with the sense of the body balanceA. VIB. VIIC. VIIID. IX |
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Answer» Correct Answer - C VIII, the auditory cranial nerve. |
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| 685. |
Match the columns I and II, and choose the correct combination from the options given. `{:(,"Column I",,"Column II"),(a.,"Unipolar neuron",1.,"Cerebral cortex"),(b.,"Bipolar neuron",2.,"Embryonic stage"),(c.,"Multipolar neuron",3.,"Retina of eye"):}`A. a -1, b-2, c-3B. a-3, b-1, c-2C. a-2, b-3, c-1D. a-2, b-1, c-3 |
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Answer» Correct Answer - C `{:(,a.,"Unipolar neuron",,2.,"Embryonic stage"),(,b.,"Bipolar neuron",,3.,"Retina of eye"),(,c.,"Multipolar neuron",,1.,"Cerebral cortex"):}` |
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| 686. |
Light rays entering the eye is controlled byA. PupilB. IrisC. CorneaD. Lens |
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Answer» Correct Answer - A Light rays entering the eye is controlled by pupil. |
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| 687. |
In rabbit, optic lobes are small because the eye sight is controlled byA. Temporal lobeB. Occipital lobeC. Frontal lobeD. Parietal lobe |
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Answer» Correct Answer - B Occipital lobe is the centre is in the temporal lobe of cerebral hemispheres. |
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| 688. |
In man which one of the following cranial nerve is associated with the sense of the body balanceA. IXB. VIIIC. VIID. VI |
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Answer» Correct Answer - B Nerve impules from hearing originates in auditory nerve (VIII). |
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| 689. |
Supply of blood is visceral organs is controlled byA. SNS, involuntaryB. SNS, voluntaryC. PNS, involuntaryD. SNS, PNS, involuntary |
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Answer» Correct Answer - D Supply of blood to visceral organs is controlled by SNS, PNS and involuntary. |
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| 690. |
On stimulation, sympathetic nervous systemA. Increases sweat secretionB. Decreases tear secretionC. Decreases salivaD. All of the above |
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Answer» Correct Answer - D Autonomic neural system controls internal organs. ANS is divided into 2 parts: (i) Sympethetic neural system-SNS (Thoracicolumbar outflow), (ii) Parasympathetic neural system-PSNS (Craniosacral outflow). SNS is activated under stress condition. SNS increases heart beat while PSNS decreases. SNS constricts arteries (increase BP) while dilates pupil, decreases salivation, tear secretion and increases sweat secretion. ltBrgt PSNS dilates arteries (lower BP) while constricts pupil, increases salivation, peristalsis. |
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| 691. |
The chief functional units of the nervous system areA. NeurogliaB. AxonC. NeuronsD. Dendrites |
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Answer» Correct Answer - C |
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| 692. |
Which of the following are the two extra cranial nerves found in rabbitA. Glossopharangeal and hypoglossalB. Glossophyrangeal and spinal accessoryC. Spinal accessory and hypoglossalD. Pneumogastric and hypoglossal |
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Answer» Correct Answer - C |
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| 693. |
Body coordination is maintained byA. Circulatory systemB. Nervous systemC. Endocrine systemD. Both B and C |
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Answer» Correct Answer - D All the functions of the body are integrated, coordinated and regulated by the neuro-endocrine system of the body. |
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| 694. |
Memory centre is present inA. CerebellumB. Parietal lobeC. Temporal lobeD. Occipital lobe |
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Answer» Correct Answer - C Memory centre is present in temporal lobe. |
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| 695. |
Structure connected h vision is human isA. Corpus callosumB. Corpora quadrigeminaC. Corpus albicansD. Hippocampus |
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Answer» Correct Answer - B Structure connected with vision is human is corpora quadrigemina. |
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| 696. |
Which one is used in balancing ?A. Organ of CortiB. Vestibular regionC. Middle earD. Cochlea |
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Answer» Correct Answer - B Vestibular region is used in balancing. |
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| 697. |
Which part of the ear is influenced by gravity and movements ?A. Vestibular apparatusB. CochleaC. Organ of CortiD. Ear ossicles |
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Answer» Correct Answer - A Vestibular apparatus part of the ear is influenced by gravity and movements. |
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| 698. |
Foramen of Monro is an aperture betweenA. Third and fourth ventriclesB. Rhinocoel and diacoelC. Lateral and third ventriclesD. Diacoel and metacoel. |
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Answer» Correct Answer - C Foramen of Monro is an aperture between lateral and third ventricles. |
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| 699. |
Which one occurs in mesencephalon/midbrain ?A. CerebellumB. Inferior colliculusC. ThalamusD. Mammillary body |
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Answer» Correct Answer - B The dorsal portion of the midbrain consists mainly of four round swellings (lobes) called corpora quadrigemmina (connect with vision). One pair is called superior colliculi and another pair is called in inferior colliculi. |
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| 700. |
Foramen of Monro isA. Gap in pelvic girdle of rabbitB. Foramen in the skull of frogC. Space in brain of frog and rabbitD. Pore in the inter-auricular septum in a mammalian heart |
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Answer» Correct Answer - c The cavities(= lateral ventricles or paracoels) of the cerebral hemispheres remain separate in frontal lobes. In temporal lobes these join together and communciate behind, by a common foramen of monro, with the diocoel (`3^(rd)` ventric le) cavity of diencephalon. |
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