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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.
| 851. |
Destruction of the anterior horn cells of the spinal cord would result in loss ofA. Integrating impulsesB. Sensory impulsesC. Voluntary motor impulsesD. Commissural impulses |
| Answer» Correct Answer - C | |
| 852. |
Destruction of the anterior horn cell of the spinal cord would result in loss ofA. Sensory impulsesB. Voluntary motor impulsesC. Commissural impulsesD. integrating impulses |
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Answer» Correct Answer - B Destruction of the anterior horn cells of the spinal cord would result in loss of voluntary motor impulses. It is because the anterior horn cells (also called anterior grey column), which is the front column of grey matter in the spinal cord contains motor neurons that affect the axial muscles. |
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| 853. |
Destruction of the anterior horn cells of the spinal cord would result in loss ofA. Sensory impulsesB. Voluntary motor impulsesC. Commissural impulsesD. Integrating impulses |
| Answer» Correct Answer - B | |
| 854. |
Reflex action immediately involvesA. Spinal cordB. CerebellumC. Medulla oblongataD. Optical lobe |
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Answer» Correct Answer - A Reflexes are classified as the spinal relfexes and the cranial reflexes. The former are so called because their basic neural path leads through spinal nerves and spinal cord. Reflexes at the spinal level have the purpose of removing the animal from harmful stimuli. |
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| 855. |
On nerve fibres to prevent leakage of an impulse layer of ...... Is foundA. Schwann cellsB. NeurilemmaC. AxonsD. Myelin sheath |
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Answer» Correct Answer - D It is a strong insulating layer which prevenets almost all flow of ions through the axonic surace and thus prevent the leakage of impulse. |
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| 856. |
Afferent nerve fibres carry impulses fromA. Effector organs to CNSB. Receptor to CNSC. CNS to receptorsD. CNS to muscles |
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Answer» Correct Answer - B Afferent nerve fibres carry impules from receptor to CNS. |
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| 857. |
Destruction of the anterior horn cell of the spinal cord would result in loss ofA. Voluntary motor impulseB. Commissural impulsesC. Integrating ImpulsesD. Sensory impulses |
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Answer» Correct Answer - A In poliomyelitis, anterior horm cells of spinal cord are destroyted which result in loss of motor activites of limbs. |
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| 858. |
Regulating muscle, which controls the pupil is a part of |
| Answer» Correct Answer - Iris | |
| 859. |
Afferent nerve fibres carry impulses fromA. effector organs to CNSB. receptors to CNSC. CNS to receptorsD. CNS to muscles |
| Answer» Correct Answer - B | |
| 860. |
Afferent nerve fibres carry impulses fromA. Effector organs to central nervous systemB. Receptors to central nervous systemC. Central nervous system to musclesD. Central nervous system to receptors |
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Answer» Correct Answer - B Nerve impulse carry through afferenct nerve fibres from receptons to central nervous system. |
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| 861. |
Inner most layer of retina which is situated towards vitreous chamber is |
| Answer» Correct Answer - Ganglionic layer | |
| 862. |
Read the given statements and select the incorrect one.A. In Hydra, all neurons are similar and join to form a nerve cell.B. In earthworms, nervous system consists of a dorsal nerve cord, paired ganglia and segmental nerves.C. Brain is present in insects.D. Planaria has two nerve cords that join to form rudimentary brain. |
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Answer» Correct Answer - B In earthworms, nervours system consists of a ventral nerve cord, paired ganglia and segmental nerves. |
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| 863. |
Assertion:The space between the cornea and the lens is called the vitreous chamber. Reason:The space between the lens and retina is called the aqueous chamber.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 - D The space between the cornea and the lens is called the aqueous chamber and contains a thin watery fluid called aqueous humor. The space between the lens and the retina is called the vitreous chamber and is filled with a transparent gel called vitreous humor. |
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| 864. |
Mouth becomes watery when we look on the delicious food is due toA. Olfactory responseB. Hormonal responseC. Neural responseD. Optic response |
| Answer» Correct Answer - c | |
| 865. |
The functions of inner viscera is controlled by ….. Nerves.A. sympatheticB. parasympatheicC. Both (a) and (b)D. cranial and spinal |
| Answer» Correct Answer - C | |
| 866. |
Which of the following is not an effect produced by parasympathetic stimulation?A. Pupil dilationB. Increased stomach activityC. Decreased stomach activityD. Constriction of bronchi |
| Answer» Correct Answer - A | |
| 867. |
The axon is a long fibre, the distal end of which is branched. Each branch terminates as a bulb-like structure called theA. DendritesB. Node of RanvierC. Myelin sheathD. Synaptic knob |
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Answer» Correct Answer - D The axon is a large fibre, the distal end of which is branched. Each branch terminates as a bulb-like structure called the synaptic knob. |
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| 868. |
The spinal cord extends from the brain through or The medulla oblongata of the brain passes out throughA. Foramen MagnumB. IterC. Anterior CommissureD. Foramen of monro |
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Answer» Correct Answer - A The medulla oblongata passes out through the foramen magnum and continues into spinal cord, which is contained in the neural canal of vertebral column. |
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| 869. |
Ventricles connecting medulla oblongata with spinal cord isA. FourthB. FifthC. ThirdD. Second |
| Answer» Correct Answer - A | |
| 870. |
Read the statements. A. Preganglionic nerve fibres of III, VII, IX and X cranial nerves are a part of the parasympathetic nervous system B. V, VII, IX and X cranial nerves are mixed nerves C. Trochlear nerves are the largest cranial nerves D. Abducens nerves are sensory in nature which of the above statements are correct ?A. A and DB. A and BC. B and CD. A and C |
| Answer» Correct Answer - B | |
| 871. |
Identify the organ/innervation mismatchA. Glossopharyngeal nerve - TongueB. Optic nerve - Eye musclesC. Facial nerve - Olfactory epitheliumD. Cochlear nerve - Spiral organ |
| Answer» Correct Answer - B | |
| 872. |
The smallest cranial nerve in human being isA. TrochlearB. OpthalmicC. Abducens, optic, trochlear, occulomotorD. None of these |
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Answer» Correct Answer - A The smallest cranial nerve is trochlear in human beings. |
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| 873. |
Read the assertion and reson carefully to mark the correct option out of the options given below: Assertion : Vitamin A deficiency produces right blindness. Reason : Photosensitive pigment rhodopsin is synthesised from vitamin A .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 Our eys are the sence organs for vision. The light sensitive inner layer of eyeball called retina contain photoreceptors viz. rod and cone cells which convert the energy of specific wvelengths of light into action potentials of nerve fibres. Rods are sensitive even to dim light and consequencly enable to see in dim light and at right. They contain a purple coloured photosensitive pigment, called rhodopsin, Rhodopsin derivative of vitamin A which is required for proper vision and is required for the regeneration of rhodopsin after if has been exposed to light. |
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| 874. |
Which of the following cranial nerves are involved in the movement of eyeA. Optic, occulomotor, abducensB. Occulomotor, abducens and trochlearC. Trochlear, abducens and opticD. Abducens, optic, trochlear, occulomotor |
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Answer» Correct Answer - B III,IV cranial nerves. |
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| 875. |
The cranial nerves which control eye-ball movement areA. 4, 6 and 7B. 3, 4, and 6C. 2, 3 and 5D. 5, 8 and 9 |
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Answer» Correct Answer - B The cranial nerve III,IV and VI are motor nerve and control eye ball movement known as III occulomotor IV trochlear and VI Abducens nerve. |
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| 876. |
Which part of human brain is most developed? |
| Answer» Correct Answer - Cerebrum | |
| 877. |
Which part of our central nervous system acts as a master clock? |
| Answer» Correct Answer - Hypothalamus | |
| 878. |
Read the given statements and select the correct option. (i)Synaptic cleft of neurons secreates 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 a myelin sheath. (iv)Spinal and cranial nerves are made of non-myelinated nerve fibres.A. a, b, c - correct, d - incorrectB. c, d - correct, a, b - incorrectC. a, b - correct, c, d - incorrectD. b, c - correct, a, d - incorrect |
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Answer» Correct Answer - D Synaptic cleft of neurons secrete acetylcholine. Spinal cord and cranial nerves are made of myelinated nerve fibres. |
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| 879. |
Excessive stimulatio of vagus nerve in human may lead toA. Hoarse voiceB. Peptic ulcersC. Efficiet digestion of proteinsD. Irregular contraction of diaphragm |
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Answer» Correct Answer - B Excessive stimulation of vagus nerves may lead to peptic ulcers. |
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| 880. |
Corpora quadrigemina acts as the centre forA. audio and visionB. olfaction and gustationC. thermoregulation and chemical senseD. none of the above |
| Answer» Correct Answer - A | |
| 881. |
Which of the following statements is/are incorrect about the electrical synapse ? (i)At electrical synapses, the membranes of pre and post synaptic neurons are in very close proximity. (ii)Electricity current can flow directly from one neuron into the other across the synapses. (iii)Transmission of an inpulse across electrical synapses is very similar to impulse conduction along single axon. (iv)Electrical synapses pass electrical signal between cells with the use of Ach. (v)Electrical synapses are fast. (vi)Electrical synapses are rare in our system.A. (ii),(iv) and (v)B. (i) and (iii)C. (iv) onlyD. (i),(v) and (vi) |
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Answer» Correct Answer - C At electrical synapse, the transfer of impulse occurs by purely electrical means without involving any neurotransmitter. |
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| 882. |
The corpora quadrigemina, composed of the superior and inferior colliculus, is located in theA. telencephalonB. mesencephalonC. diencephalonD. metencephalon |
| Answer» Correct Answer - B | |
| 883. |
Read the given statements and select the correct option. (i)Synaptic cleft of neurons secreates 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 a myelin sheath. (iv)Spinal and cranial nerves are made of non-myelinated nerve fibres.A. I, II are correct, but III and IV are incorrectB. I, II and III are correct but IV is incorrectC. III and IV are correct, but I and II are incorrectD. II and III are correct, but I and IV are incorrect |
| Answer» Correct Answer - D | |
| 884. |
Read the following statements and find out the incorrect statements. a. A synapse is formed by the membranes of a pre-synaptic neuron and a post-synaptic neuron, which may or may not be separated by a gap called synaptic cleft. b. At electrical synapses, the membranes of pre-and post-synaptic neurons are in very close proximity. c. Electrical current can flow directly from one neuron into the other across chemical synapses. d. Impulse trasmission across a chemical synapse is always faster than that across a electric synapse. e. Electrical synapses are rare in our system.A. a and bB. b and cC. c and dD. d and e |
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Answer» Correct Answer - C Electrical current can flow directly from one neuron into the other across electrical synapses. Impulse transmission across an electric synapse is always faster than that across a chemical synapses. |
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| 885. |
Band of fibres which join corpora quadrigemina to cerebellum is calledA. Pons varolliB. Valve of VieusseusC. Corpus callosumD. Corpus striatum |
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Answer» Correct Answer - B Band of fibres which join corpora quadrigemina to cerebellum is called valve of Vieusseus. |
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| 886. |
Which of the following statemetn are correct and incorret 1. Synaptic cleft of neurons secrate adrenaline 2. Myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon 3. Non- myrlineated nerve fibre is emclosed by a schwann cell that from a myelin sheath. 4. Spinal cord and cranial nerve are made of non-myelinated nerve fibres of the four statemetsA. 1,2 are correct but 3 and 4 are incorrectB. 1,2 and 3 are correct but 4 is incorrectC. 3 and 4 are correct but 1 and 2 are incorrectD. 1 and 4 correct while 2 and 3 are incorrect |
| Answer» Correct Answer - d | |
| 887. |
Which of the following is true about the synaptic cleft ?A. It is the space present inside the pre-synaptic neuron .B. It is the space present inside the post-synaptic neuronC. It is the space separating the pre-and post-synaptic neurons.D. It is the space present inside the synaptic vesicles. |
| Answer» Correct Answer - C | |
| 888. |
Through which of the following . Energy (ATP) is required to transport the ions and why ? (a) Sodium - potassium pumps (b) `Na^(+)` channels (c ) `K^(+) ` channels |
| Answer» Sodium - potassium pumps require the energy input to transport `3 Na^(+)` outwards for `2 K^(+)` into the axon because sodium - potassium pump works against the concentration gradient of `Na^(+)` and `K^(+)`, Whereas the `Na^(+) and K^(+)` ion channels transport ions from high to low concentrations, i.e., along the conecntration gradient, that is why energy is not required in them . | |
| 889. |
Assertion:Association areas are neither clearly sensory nor motor in function. Reason:Association areas are responsible for complex functions like intersensory associations, memory and communication.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 - D The cerebral cortex contains motar areas, sensory areas and large regions that are neighter clearly sensory nor motar in function. These regions are called as the association areas which are responsible for complex funcitons like intensensory associations, memory and communication. Association area is concerned with the reception of sensory impluses and start of motar impluses. |
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| 890. |
What will happen if the post - synaptic receptors in a chemical synapse are removed ? (a) Synaptic transmission will be faster (b) Synaptic transmission will become slower (c ) Synaptic transmission will be not occur (d) Synaptic transmission will be unaffected |
| Answer» Chemical synaptic transmission will not occur. This is because if receptors on the post - synaptic membrane will be removed, the neurotransmitters released from the pre - synaptic neuron will not be able to bind anywhere on the post - synaptic membrane. The action potential will not develop in the post - synaptic neuron. Hence, synaptic transmission will not occur across a chemical synapse. | |
| 891. |
Deep cleft which divides cerebrum longitudinaly into two halves, known as |
| Answer» Correct Answer - Median fissure | |
| 892. |
What is the location and function of corpora quadrigemina ? |
| Answer» Corpora quadrigemina lies in the midbrain and is composed of two upper lobes and two lower lobes. The function of upper lobes is to control visual reflexes and of lower lobes is to control auditory reflexes . | |
| 893. |
Major cordinating centre of fore brain which is wrapped around by cerebrum and responsible for motor & sensory signalingg is |
| Answer» Correct Answer - Thalamus | |
| 894. |
The major relay station for sensory input that projects to the cerebral cortex is theA. PonsB. ThalamusC. CerebellumD. Hypothalamus |
| Answer» Correct Answer - B | |
| 895. |
Coiled prtion of membranous labyrinth is filled with |
| Answer» Correct Answer - Endolymph | |
| 896. |
Cerebrum regulatesA. speechB. hearingC. visionD. all of these |
| Answer» Correct Answer - D | |
| 897. |
Region of cerebral cortex which is neither motor nor sensory is |
| Answer» Correct Answer - Association area | |
| 898. |
Name the various areas present in cerebral cortex. |
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Answer» (a) Sensory areas (b) Motor areas (c ) Association areas |
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| 899. |
Cerebral cortex consists ofA. Grey matterB. White matterC. DuramatterD. Arachnoid matter |
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Answer» Correct Answer - A The cerebral cortex is referred to as the grey matter due to its greyish appearance. The neuron cell bodies are concentrated here giving the colour. |
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| 900. |
The roof of cerebrum isA. centrocoelB. palliumC. arbor vitaeD. third ventricle |
| Answer» Correct Answer - B | |