1048 + Interview Questions in NEURAL-CONTROL-AND-COORDINATION IN GENERAL AWARENESS Page 17 InterviewSolution

801.	Odd one out w.r.t. originA. AstrocyteB. Microglial cellsC. OligodendrocytesD. Ependymal cells
Answer» Correct Answer - B

Discussion

802.	For most excitable cells, the threshold stimulus isA. `+ 40` mVB. ` - 55 ` to ` - 60` mVC. ` + 60` mVD. ` -70` mV
Answer» Correct Answer - B

Discussion

803.	The action potential is determined largely byA. Influx of `Na^(+)`B. Effux of `Na^(+)`C. Influx of `K^(+)`D. Efflux of `K^(+)`
Answer» Correct Answer - A

Discussion

804.	On application of a stimulus on the axonal membrane,A. There is a rapid influx of `K^(+)` at that siteB. There is a rapid efflux of `Na^(+)` at that siteC. There is a rapid influx of `Na^(+)` at that siteD. There is a rapid efflux of `K^(+)` at that site
Answer» Correct Answer - C

Discussion

805.	Repolarisation of the axonal membrane results in development ofA. Negative charge on the outer side and positive charge on the inner sideB. Positive charge on the outer side and negative charge on the inner sideC. Negative charge on both the sidesD. Positive charge on both the sides
Answer» Correct Answer - B

Discussion

806.	In which of the following part of brain, the nerve impulses of sound are analysed ?A. Visual cortex areaB. Olfactory cortex areaC. Auditory cortex areaD. Tactile cortex area
Answer» Correct Answer - C

Discussion

807.	In `Na^(+) - K^(+)` pump of active transport there isA. Efflux of `Na^(+)` and influx of `K^(+)`B. Only efflux of `Na^(+)`C. Influx of `Na^(+)` and efflux of `K^(+)`D. Influx and efflux of `Na^(+)` only
Answer» Correct Answer - A

Discussion

808.	In human beings typical nerve cell isA. BipolarB. ApolarC. MultipolarD. Pseudounipolar
Answer» Correct Answer - C

Discussion

809.	Inhibitory neurotransmitter isA. NorepinephrineB. EpinephrineC. GABAD. More than one option is correct
Answer» Correct Answer - C

Discussion

810.	An investigator places as isolated neuron in a calcium-free medium, gives the neuron a suprathreshold stimulus and then performs an assay to test whether neurotransmitter is released into the medium. Which of the following outcomes would you predict ?A. No neurotransmitter is detected since influx of calcuim into the synaptic knob is required for neurottransmitter releaseB. No neurotransmitter is detected since influx of calcuim is required in order for the neuron to conduct an action potentialC. Neurotransmitter is detected since calcium is not required for action potential conduction and the initial stimulus was suprathresholdD. We cannot predict the outcome without knowing whether the neuron was myelinated
Answer» Correct Answer - a

Discussion

811.	During depolarisation of an axonal membraneA. The `K^(+)` channels are openB. The `Na^(+)` voltage gated channels are openC. The `K^(+)` voltage gated channels are closedD. Both (2) & (3)
Answer» Correct Answer - D

Discussion

812.	Rapid movement of `Na^(+)` ions from extracellular fluid to inside the nerve cell leads toA. PolarisationB. DepolarisationC. RepolarisationD. All of these
Answer» Correct Answer - B

Discussion

813.	If the `Na^(+) - K^(+)` pump stops working then theA. `Na^(+) and K^(+)` will be in excess in estracellular fluidB. `Na^(+)` will be in excess in intracellular fluidC. `K^(+)` will be excess in intracellular fluidD. `Na^(+)` will be in excess in intracellular fluid
Answer» Correct Answer - D

Discussion

814.	Pseudounipolar neurons occur inA. Pyramidal cells of cerebral cortexB. Retina of eyeC. Schneiderian membraneD. Cells of dorsal root ganglion
Answer» Correct Answer - D

Discussion

815.	An investigator places as isolated neuron in a calcium-free medium, gives the neuron a suprathreshold stimulus and then performs an assay to test whether neurotransmitter is released into the medium. Which of the following outcomes would you predict ?A. No neurotansmitter is detected since influx of calcium into the synaptic knob is required for neurotransmitter releaseB. No neurotransmitter is detected since influx of calcium is required in order for the neuron to conduct an action potentialC. Neurotransmitter is detected since calcium is not required for action potential conduction and the initial stimulus was suprathresholdD. We cannot predict the outcome without knowing whether the neuron was myelinated
Answer» Correct Answer - A

Discussion

816.	Which of the following part of a neuron is covered by fatty or The efferent process of neuron is known asA. AxonB. CytonC. DendriteD. Node of Ranvier
Answer» Correct Answer - A Myellnated or medullated nerve fibre (Axon) is surrounded by inner thick medullary sheath of fatty matterial called myelin.

Discussion

817.	Depolarisation is theA. Active processB. Passive processC. Both active and passive processD. First it is passive and than it becomes a
Answer» Correct Answer - B

Discussion

818.	The 3rd, 6th and 11th cranial nerves areA. Occulomotor, trigeminal, spinalB. Optic, facial, spinalC. Occulomotor, abducens, spinalD. Trichlear, abducens, vagus
Answer» Correct Answer - c `3^(rd),6^(th),11^(th)` crainal nerve are occulomotor, abducens and spinal accessory respectively. All of these are motor nerve.

Discussion

819.	Which of the following act is responsible for the depolarisation of the neuron ?A. Opening of voltage gated `K^(+)` channelB. Opening of voltage gated `Na^(+)` channelC. Closure of voltage gated `K^(+)` channelD. Closure of voltage gated `Na^(+)` channel
Answer» Correct Answer - B

Discussion

820.	Which one of the following is the correct sequence of cranial nerves in chordates ?A. Facial, abducens, auditory, glossopharyngealB. Auditory, facial, abdunces, glossopharyngealC. Abducens, facial, auditory, glossopharyngealD. Glossopharyngeal, facial, auditory, abducens
Answer» Correct Answer - C

Discussion

821.	which of the following helps in transmission of impulse across the synapse ?A. `Na^(+)`B. `K^(+)`C. `Ca^(2+)`D. `Mg^(2+)`
Answer» Correct Answer - C

Discussion

822.	Function of sympathetic nervous system is toA. Decrease heart beatB. Increase heart beatC. Contract respiratory organD. Secrete saliva
Answer» Correct Answer - b Sympathetic nervous system increases the (i) rate and force of heart beat, (ii) constricts most blood vessels, (iii) raises the arterial blood pressure, (iv) dilates the pupil (v) slows down peristatic movements, (vi) and relax the urinary bladder.

Discussion

823.	In the central nervous system myelinated fibres form the …. While the non-myelinated fibre cells form the …….A. Grey matter , white matterB. White matter, grey matterC. Ependymal cells, neurosecretory cellsD. Neurosecretory cells, ependymal cells
Answer» Correct Answer - B

Discussion

824.	Depolarisation of nerve cell involvesA. Influx of `K^(+)`B. Influx of `Na(+)`C. Influx of `Ca^(2+)andCl^(-)`D. Effux of `Na^(2+)`
Answer» Correct Answer - B Depolarisaton nerve cell involves influx of `Na^(+)`.

Discussion

825.	Which set of terms would most likely be used in a description of the nervous system of chordates ?A. Brain, dorsal nerve cord, highly developed receptorsB. Brain, fused ganglia, ventral nerve cordC. No brain, fused ganglia, tympanaD. No brain, nerve net, modified neurons
Answer» Correct Answer - A

Discussion

826.	Nerve impulse are transmitted across a synapse from theA. cell body of one neuron to the axon terminal of anotherB. dendrites of one neuron to the axon terminal of anotherC. axon terminal of one neuron to the dendrites of anotherD. dendrites of one to cell body of anther
Answer» Correct Answer - C

Discussion

827.	Choroid plexus is a network ofA. CapillariesB. Muscle fibresC. NervesD. Lymph versels
Answer» Correct Answer - a The thin roof of III ventride (diocoel) is called epithalamus. The anterior part of epithalamus contains a highly colled bunch of blood caplillaries called anterior Choroid plexus. The dorsal surface of metacoel also contains highly colled bunch of blood capillaries called post choroid plexus.

Discussion

828.	What are the two types of nervous system cells?A. Alvcoli and veinsB. Alveoli and bronchiolesC. Neurons and nephronsD. Neurons and glia
Answer» Correct Answer - D

Discussion

829.	Which of the following statement is not correct about choroid ?A. It is the most vascular structureB. It is black in colourC. It prevent internal reflection of lightD. It is the visual portina
Answer» Correct Answer - D

Discussion

830.	Unidirectional transmission of a nerve impulse through nerve fibre is due to the fact thatA. nerve fibre is insulated by a medullary sheathB. sodium pump starts operationg only at the cyton and then continues into the nerve fibreC. neurotransmitters are released by dendrites and not by axon endingsD. neurotransmitters are released by the axon endings and not by dendrites
Answer» Correct Answer - D

Discussion

831.	In moonlight we cannot see the colours, becauseA. Cones and rods are equally functionalB. Only cones are functionalC. Only rods are functionalD. Depolarisation at cone cells
Answer» Correct Answer - C

Discussion

832.	Mark the incorrect atatementA. Sclera is composed of dense connective tissueB. The choroid layer is thick in the anterior part in comparison to posterior 2/3 of eye ball.C. Retina contains three layer of cells, and from outside to inside it is ganglionic cells, bipolar cells and photoreceptor cellsD. The diameter of pupil is regulated by the muscle fibres of iris
Answer» Correct Answer - C

Discussion

833.	Rods and cones are present inA. irisB. corneaC. scleroticD. retina
Answer» Correct Answer - D

Discussion

834.	An area of the retina which does not have rods of cones isA. Red spotB. Blue spotC. Blind spotD. Black spot
Answer» Correct Answer - C

Discussion

835.	Chemicals which are released at the synaptic junction are calledA. HormonesB. NeurotransmitterC. Cerebrospinal fluidD. Lymph
Answer» Correct Answer - B

Discussion

836.	Mark the incorrect atatementA. Sclera is composed of dense connective tissueB. The choroid layer is thick in the anterior part in comparison to posterior 2/3 of eye ball.C. Retina contains three layer of cells, and from outside to inside it is ganglionic cells, bipolar cells and photoreceptor cellsD. The diameter of pupil is regulated by the muscle fibres of iris
Answer» Correct Answer - C

Discussion

837.	The number of cranial nerves in a mammal including man isA. 10B. 12C. 24D. 20
Answer» Correct Answer - C The number of cranial nerves in a mammal including man is 24/12 pairs.

Discussion

838.	If an organism has more rods it willA. More active at nightB. More active during dayC. More active during duskD. Having colour vision
Answer» Correct Answer - A An animal having more rods will be active at night.

Discussion

839.	Arrange the following based upon the mechanism of vision ? (a) Absorption of visible wavelength of hight by rods and cones (b) Change in the permeability - of photoreceptors cells (c ) Dissociation of retinal form opsin (d) Generation of action potential in the ganglionic cellA. a, b, c, dB. a, c, b, dC. a, d, b, cD. a, c, d, b
Answer» Correct Answer - B

Discussion

840.	Synaptic delay is the time taken between theA. actual reception of a stimulus and its perceptionB. reception of a stimulus and the resultant sensory reactionC. release of a neurotransmitter from one neuron and stimulation of the next neuronD. conduction of nerve impulse across a neuron
Answer» Correct Answer - C

Discussion

841.	Which option is correct for the correctly matched groups for the column I, Column II and Column III A. (a-ii-h)(b-i-g)(c-iii-e)(d-iv-f)B. (a-iii-e)(b-iv-f)(c-i-h)(d-ii-g)C. (a-iv-f)(b-iii-e)(c-i-e)(d-ii-h)D. (a-iv-e)(b-iii-f)(c-ii-g)(d-i-g)
Answer» Correct Answer - B During resting membrane potential, `Na^(+)` ions are more on the outer side of membrane due to `Na^(+)-K^(+)` ion pumps: (b) Action potential lasts only for very short time and `Na^(+)` ions are more on the inner side of membrane, (c) During depolarization, `Na^(+)` developing positive charge on inner side of plasma membrane, (d) during replarization, `Na^(+)` ion channel get closed and `K^(+)` ion channels open leading to effux of `K^(+)` moving it outerside of membrane.

Discussion

842.	Read the following statements and find out the incorrect statement.A. Dendrites transmit impules away from the cell body to a synapse or NMJ.B. Synaptic knob possess synaptic vesicles containing chemicals called neurotransmitters.C. Based on the number of axon and dendrites, the neurons are divided into three types, i.e. unipoler, bipolar and multipolar.D. In Hydra, the neural system is composed of a network of neurons.
Answer» Correct Answer - A Dendrites transmit impulse towards the cell body

Discussion

843.	Which is the incorrect about the mechanism of vision ?A. Light rays in visible wavelength focused on the retina induces dissociation of the retinal from opsim resulting in changes in the structure of the opsin.B. Due to change in the structure of opsin membrane permeability changes and potential difference are generated in the photoreceptor cells.C. A signal is produced in photoreceptor cell that generates action potentials in the bipolar cells through the ganglion cells.D. The action potentials (impulses) are transmitted by the optic nerve to the visual cortex area of the brain, where the neural impulses are analysed and the image formed on the retina is recognised based on earlier memory and experience.
Answer» Correct Answer - C A signal is produced is photoreceptor cell that generates action potentials in the ganglion cells through the bipolar cells.

Discussion

844.	Pioneer work on conditioned reflex was done byA. KarmerB. PavlovC. DarwinD. Lamark
Answer» Correct Answer - B Ivan Pavlov of Russia (1906), on the basis of experiments with dogs showed that conditioned reflex affects behaviour.

Discussion

845.	An example of conditioned reflex isA. withdrawl of hand on touching a hot surfaceB. sneezing during coldC. running indoor on arrival of rainD. salivation in dog on seeing bread
Answer» Correct Answer - D

Discussion

846.	Which of the following is an example of conditioned reflex ?A. Hand withdraws when pierced with a needleB. Eyes close, when anything enters into themC. During digestion, food goes forward in alimentary canalD. Trained dog salivates when you ring a bell
Answer» Correct Answer - D Trained dog salivates when you ring a bell is an example of conditined reflexes are acquired , dependent on past experience, training and learning

Discussion

847.	Nerve impulse travels asA. chemical impulseB. electrical impulseC. electrochemical impulseD. physical impulse
Answer» Correct Answer - C

Discussion

848.	Synaptic vesicle is found inA. Pre-synaptic neuronB. Post synaptic neuronC. Synaptic leftD. None of these
Answer» Correct Answer - A In a synapse, the transmitting cell is called the presynaptic cell and the gap in between is called a synaptic cleft. Synaptic vesicles are found in presynaptic neruron. They contain neurotransmitters which on stimulation are released into synaptic cleft and then these chemicals combine with the receptors on the postsynaptic neuron causing depolarization.

Discussion

849.	Simple two neuron reflex arc involvesA. Sensory neuronB. Spinal cordC. Effector neuronD. All of above
Answer» Correct Answer - d Reflex are is the basic functional unit of nervous system. The entire impulse circuit of a reflex response. Receptors `rarr` CNS `rarr` effector

Discussion

850.	Nerve impulse travels faster inA. Medullated nerveB. Non-medullated nerveC. Cranial nerveD. Spinal nerve
Answer» Correct Answer - A On medullated nerve fibres speed of nerve impulse is about 20 times faster than on non-medulalted nerve fibres.

Discussion

Explore topic-wise InterviewSolutions in .

Odd one out w.r.t. originA. AstrocyteB. Microglial cellsC. OligodendrocytesD. Ependymal cells

For most excitable cells, the threshold stimulus isA. `+ 40` mVB. ` - 55 ` to ` - 60` mVC. ` + 60` mVD. ` -70` mV

The action potential is determined largely byA. Influx of `Na^(+)`B. Effux of `Na^(+)`C. Influx of `K^(+)`D. Efflux of `K^(+)`

On application of a stimulus on the axonal membrane,A. There is a rapid influx of `K^(+)` at that siteB. There is a rapid efflux of `Na^(+)` at that siteC. There is a rapid influx of `Na^(+)` at that siteD. There is a rapid efflux of `K^(+)` at that site

Repolarisation of the axonal membrane results in development ofA. Negative charge on the outer side and positive charge on the inner sideB. Positive charge on the outer side and negative charge on the inner sideC. Negative charge on both the sidesD. Positive charge on both the sides

In which of the following part of brain, the nerve impulses of sound are analysed ?A. Visual cortex areaB. Olfactory cortex areaC. Auditory cortex areaD. Tactile cortex area

In `Na^(+) - K^(+)` pump of active transport there isA. Efflux of `Na^(+)` and influx of `K^(+)`B. Only efflux of `Na^(+)`C. Influx of `Na^(+)` and efflux of `K^(+)`D. Influx and efflux of `Na^(+)` only

In human beings typical nerve cell isA. BipolarB. ApolarC. MultipolarD. Pseudounipolar

Inhibitory neurotransmitter isA. NorepinephrineB. EpinephrineC. GABAD. More than one option is correct

During depolarisation of an axonal membraneA. The `K^(+)` channels are openB. The `Na^(+)` voltage gated channels are openC. The `K^(+)` voltage gated channels are closedD. Both (2) & (3)

Rapid movement of `Na^(+)` ions from extracellular fluid to inside the nerve cell leads toA. PolarisationB. DepolarisationC. RepolarisationD. All of these

If the `Na^(+) - K^(+)` pump stops working then theA. `Na^(+) and K^(+)` will be in excess in estracellular fluidB. `Na^(+)` will be in excess in intracellular fluidC. `K^(+)` will be excess in intracellular fluidD. `Na^(+)` will be in excess in intracellular fluid

Pseudounipolar neurons occur inA. Pyramidal cells of cerebral cortexB. Retina of eyeC. Schneiderian membraneD. Cells of dorsal root ganglion

Which of the following part of a neuron is covered by fatty or The efferent process of neuron is known asA. AxonB. CytonC. DendriteD. Node of Ranvier

Depolarisation is theA. Active processB. Passive processC. Both active and passive processD. First it is passive and than it becomes a

The 3rd, 6th and 11th cranial nerves areA. Occulomotor, trigeminal, spinalB. Optic, facial, spinalC. Occulomotor, abducens, spinalD. Trichlear, abducens, vagus

Which of the following act is responsible for the depolarisation of the neuron ?A. Opening of voltage gated `K^(+)` channelB. Opening of voltage gated `Na^(+)` channelC. Closure of voltage gated `K^(+)` channelD. Closure of voltage gated `Na^(+)` channel

Which one of the following is the correct sequence of cranial nerves in chordates ?A. Facial, abducens, auditory, glossopharyngealB. Auditory, facial, abdunces, glossopharyngealC. Abducens, facial, auditory, glossopharyngealD. Glossopharyngeal, facial, auditory, abducens

which of the following helps in transmission of impulse across the synapse ?A. `Na^(+)`B. `K^(+)`C. `Ca^(2+)`D. `Mg^(2+)`

Function of sympathetic nervous system is toA. Decrease heart beatB. Increase heart beatC. Contract respiratory organD. Secrete saliva

In the central nervous system myelinated fibres form the …. While the non-myelinated fibre cells form the …….A. Grey matter , white matterB. White matter, grey matterC. Ependymal cells, neurosecretory cellsD. Neurosecretory cells, ependymal cells

Depolarisation of nerve cell involvesA. Influx of `K^(+)`B. Influx of `Na(+)`C. Influx of `Ca^(2+)andCl^(-)`D. Effux of `Na^(2+)`

Which set of terms would most likely be used in a description of the nervous system of chordates ?A. Brain, dorsal nerve cord, highly developed receptorsB. Brain, fused ganglia, ventral nerve cordC. No brain, fused ganglia, tympanaD. No brain, nerve net, modified neurons

Nerve impulse are transmitted across a synapse from theA. cell body of one neuron to the axon terminal of anotherB. dendrites of one neuron to the axon terminal of anotherC. axon terminal of one neuron to the dendrites of anotherD. dendrites of one to cell body of anther

Choroid plexus is a network ofA. CapillariesB. Muscle fibresC. NervesD. Lymph versels

What are the two types of nervous system cells?A. Alvcoli and veinsB. Alveoli and bronchiolesC. Neurons and nephronsD. Neurons and glia

Which of the following statement is not correct about choroid ?A. It is the most vascular structureB. It is black in colourC. It prevent internal reflection of lightD. It is the visual portina

In moonlight we cannot see the colours, becauseA. Cones and rods are equally functionalB. Only cones are functionalC. Only rods are functionalD. Depolarisation at cone cells

Rods and cones are present inA. irisB. corneaC. scleroticD. retina

An area of the retina which does not have rods of cones isA. Red spotB. Blue spotC. Blind spotD. Black spot

Chemicals which are released at the synaptic junction are calledA. HormonesB. NeurotransmitterC. Cerebrospinal fluidD. Lymph

The number of cranial nerves in a mammal including man isA. 10B. 12C. 24D. 20

If an organism has more rods it willA. More active at nightB. More active during dayC. More active during duskD. Having colour vision

Synaptic delay is the time taken between theA. actual reception of a stimulus and its perceptionB. reception of a stimulus and the resultant sensory reactionC. release of a neurotransmitter from one neuron and stimulation of the next neuronD. conduction of nerve impulse across a neuron

Which option is correct for the correctly matched groups for the column I, Column II and Column III A. (a-ii-h)(b-i-g)(c-iii-e)(d-iv-f)B. (a-iii-e)(b-iv-f)(c-i-h)(d-ii-g)C. (a-iv-f)(b-iii-e)(c-i-e)(d-ii-h)D. (a-iv-e)(b-iii-f)(c-ii-g)(d-i-g)

Pioneer work on conditioned reflex was done byA. KarmerB. PavlovC. DarwinD. Lamark

An example of conditioned reflex isA. withdrawl of hand on touching a hot surfaceB. sneezing during coldC. running indoor on arrival of rainD. salivation in dog on seeing bread

Which of the following is an example of conditioned reflex ?A. Hand withdraws when pierced with a needleB. Eyes close, when anything enters into themC. During digestion, food goes forward in alimentary canalD. Trained dog salivates when you ring a bell

Nerve impulse travels asA. chemical impulseB. electrical impulseC. electrochemical impulseD. physical impulse

Synaptic vesicle is found inA. Pre-synaptic neuronB. Post synaptic neuronC. Synaptic leftD. None of these

Simple two neuron reflex arc involvesA. Sensory neuronB. Spinal cordC. Effector neuronD. All of above

Nerve impulse travels faster inA. Medullated nerveB. Non-medullated nerveC. Cranial nerveD. Spinal nerve