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NEET • BIOLOGY • NEURAL CONTROL AND COORDINATION

Neural control and coordination practice · Mixed difficulty

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Showing 61-90 of 298 questions

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61 Easy

61 of 298

Remembering +4 | -1

The PNS comprises of

View answer and explanation

Correct option: D

All the nerves of the body associated with the CNS

Option D (All the nerves of the body associated with the CNS) is correct because the PNS includes all nerves outside the brain and spinal cord.

62 Medium

62 of 298

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A projecting ridge, having hair cells, present at the swollen base of semicircular canals is known as

View answer and explanation

Correct option: D

Crista ampullaris

Option D (Crista ampullaris) is correct because the crista ampullaris is a sensory receptor located in the ampulla of each semicircular canal, containing hair cells that detect rotational movement.

63 Medium

63 of 298

Remembering +4 | -1

In which of the following, Nissl’s granules are found in?

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Correct option: B

Nerve cells

Option B (Nerve cells) is correct because Nissl's granules, which are involved in protein synthesis, are found in the cytoplasm of nerve cells (neurons).

64 Hard

64 of 298

Understanding +4 | -1

Assertion: Injury and breakage of medulla can cause death of a person

Reason: Medulla has pneumotaxic cantre for respiration.

View answer and explanation

Correct option: C

Assertion is True, Reason is False

Option C (Assertion is True, Reason is False) is correct because while the medulla's injury can cause death, the pneumotaxic center is located in the pons, not the medulla.

65 Medium

65 of 298

Understanding +4 | -1

In which direction, cristae of rabbit ear helps in maintaining balance?

View answer and explanation

Correct option: B

Transverse position of longitudinal axis of semi circular canals

Option A (Circular position of longitudinal axis of semi circular canals) is incorrect. Option B (Transverse position of longitudinal axis of semi circular canals) is correct because the cristae ampullares are oriented to detect angular acceleration in different planes, which is achieved by their transverse positioning relative to the semicircular canals.

66 Hard

66 of 298

Understanding +4 | -1

Which of the following is correct for pupil of human eye?

I. It is the aperture surrounded by the iris

II. The diameter of pupil is regulated by muscle fibres of iris

III. It is a transparent crystalline structure attached to the ciliary body
The correct option is

View answer and explanation

Correct option: D

I, II and III

Option D is correct because all three statements accurately describe the pupil of the human eye and its function.

67 Hard

67 of 298

Remembering +4 | -1

Otorhinolaryngology is the study of :

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Correct option: D

ENT

Option D (ENT) is correct because otorhinolaryngology is the branch of medicine that deals with the diagnosis and treatment of diseases of the ear, nose, and throat (ENT).

68 Medium

68 of 298

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The functions of the organs/organ system in our body must be coordinated to maintain …….
Complete the given statement with reference to NCERT textbook

View answer and explanation

Correct option: B

Homeostasis

Option B (Homeostasis) is correct because the coordinated function of organs and organ systems is essential for maintaining a stable internal environment, which is homeostasis.

69 Hard

69 of 298

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Which of the following is an eye disease?

View answer and explanation

Correct option: C

Glaucoma

Option C (Glaucoma) is correct because glaucoma is a group of eye diseases that damage the optic nerve, often caused by abnormally high pressure in the eye.

70 Hard

70 of 298

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A wave of action potential is termed as

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Correct option: B

Nerve impulse

Option B (Nerve impulse) is correct because a wave of action potential propagating along a nerve fiber is termed a nerve impulse.

71 Hard

71 of 298

Understanding +4 | -1

[A]: Ear muscles of external ear in man are well developed.

[R]: These muscles do not move external ear freely to detect sound.

View answer and explanation

Correct option: D

Both A and R are false

Option D (Both A and R are false) is correct because ear muscles in humans are vestigial and do not provide significant movement for sound detection.

72 Medium

72 of 298

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The system that transmits impulses from CNS to skeletal muscles is

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Correct option: C

Somatic neural system

Option C (Somatic neural system) is correct because it is responsible for transmitting impulses from the CNS to skeletal muscles, enabling voluntary movements.

73 Easy

73 of 298

Remembering +4 | -1

Depolarization occurs due to

View answer and explanation

Correct option: A

Influx of

N{a^ + }

Option A (Influx of

N{a^ + }

) is correct because depolarization is caused by the rapid influx of sodium ions into the neuron.

74 Hard

74 of 298

Remembering +4 | -1

Myelinated nerve fibre is found in

View answer and explanation

Correct option: C

Both 1 and 2

Option C (Both 1 and 2) is correct because myelinated nerve fibers are found in both spinal nerves and cranial nerves, which are components of the peripheral nervous system.

75 Medium

75 of 298

Remembering +4 | -1

When we do physical exercises, the energy demand is

View answer and explanation

Correct option: A

Increased

Option A (Increased) is correct because physical exercise increases the body's metabolic rate and thus the demand for energy.

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76 Medium

76 of 298

Understanding +4 | -1

Which one is correct about the physiology of eye?

View answer and explanation

Correct option: B

When light is shone in one eye both pupils constrict

Option B (When light is shone in one eye both pupils constrict) is correct because the pupillary light reflex causes both pupils to constrict when light is shone into either eye.

77 Hard

77 of 298

Understanding +4 | -1

Read the following statements

(A) Depolarization of an axonal membrane is caused due to rise in stimulus-induced permeability to

{Na}^{+}

and its rapid influx into axoplasm.

(B) Diffusion of

{K}^{+}

outside the axonal membrane restores the resting potential of the membrane.

(C) Sodium potassium pump maintains active transport of

2 {Na}^{+}

outwards for

3 {~K}^{+}

into axoplasm across resting membrane

Choose the option that represent correct statements only

View answer and explanation

Correct option: B

A and B

Option B (A and B) is correct because depolarization is caused by sodium influx, and potassium efflux restores the resting potential.

78 Hard

78 of 298

Understanding +4 | -1

While travelling to higher altitudes, people can feel pain in the ear and dizziness. Which part, among the following is involved?

View answer and explanation

Correct option: C

Eustachian tube, utricle, saccule and semicircular canals

Option C (Eustachian tube, utricle, saccule and semicircular canals) is correct because the Eustachian tube helps regulate pressure, and the utricle, saccule, and semicircular canals are involved in balance, which can be affected by altitude changes.

79 Easy

79 of 298

Understanding +4 | -1

Which of the following poet is involved in interpreting an input, storing input information and initiating a response in the light of similar past experiences?

View answer and explanation

Correct option: C

Association area

Option C (Association area) is correct because association areas are involved in interpreting inputs, storing information, and initiating responses based on past experiences.

80 Easy

80 of 298

Understanding +4 | -1

Within the mammalian auditory system ________ can convert sound vibrations into nerve impulses

View answer and explanation

Correct option: B

Cochlea containing hair cells

Option B (Cochlea containing hair cells) is correct because the hair cells within the cochlea are the primary transducers that convert mechanical sound vibrations into electrical nerve impulses.

81 Medium

81 of 298

Understanding +4 | -1

Choose the incorrect statement

View answer and explanation

Correct option: D

Hypothalamus is responsible for complex functions like intersensory associations, memory and communication

Option D (Hypothalamus is responsible for complex functions like intersensory associations, memory and communication) is correct because the cerebrum, not the hypothalamus, is primarily responsible for intersensory associations, memory, and communication.

82 Medium

82 of 298

Understanding +4 | -1

Injury to vagus nerve in human is not likely to affect

View answer and explanation

Correct option: A

Tongue movements

Option A (Tongue movements) is correct because tongue movements are primarily controlled by the hypoglossal nerve (CN XII), not the vagus nerve (CN X).

83 Medium

83 of 298

Understanding +4 | -1

In the axon of motor nerve fibre, the nerve impulse travels

View answer and explanation

Correct option: B

Away from cell body

Option B (Away from cell body) is correct because nerve impulses travel down the axon, which extends away from the cell body.

84 Medium

84 of 298

Remembering +4 | -1

Reflex action involves

View answer and explanation

Correct option: A

Spinal cord

Option A (Spinal cord) is correct because the spinal cord is the primary control center for many reflex actions, allowing for quick responses without involving the brain.

85 Medium

85 of 298

Understanding +4 | -1

Mechanism of neural coordination involves

View answer and explanation

Correct option: D

All of the above

Option D (All of the above) is correct because neural coordination involves nerve impulse transmission, synaptic conduction, and reflex actions.

86 Hard

86 of 298

Remembering +4 | -1

A neural signal reaching neuromuscular junction release a neurotransmitter namely.

View answer and explanation

Correct option: B

Acetylcholine

Option B (Acetylcholine) is correct because a neural signal reaching the neuromuscular junction releases the neurotransmitter acetylcholine, which triggers muscle contraction.

87 Medium

87 of 298

Understanding +4 | -1

Which of the following statements is correct about the nodes of ranvier?

View answer and explanation

Correct option: B

Myelin sheath is discontinuous

Option B (Myelin sheath is discontinuous) is correct because the nodes of Ranvier are gaps in the myelin sheath along the axon.

88 Medium

88 of 298

Understanding +4 | -1

Under prolonged starvation, brain receives energy from

View answer and explanation

Correct option: D

Acetoacetate

Option D (Acetoacetate) is correct because during prolonged starvation, the brain adapts to use ketone bodies like acetoacetate as an alternative energy source.

89 Medium

89 of 298

Remembering +4 | -1

Choose the correct non-protein amino acid from the given option.

View answer and explanation

Correct option: D

γ-amino butyric acid

Option D is correct. γ-amino butyric acid (GABA) is a non-protein amino acid that functions as a neurotransmitter.

90 Medium

90 of 298

Understanding +4 | -1

Read the given statements :
Statement A : Organ of corti rests on tectorial membrane
Statement B : organ of corti helps to maintain equilibrium of the body
Choose the incorrect option

View answer and explanation

Correct option: B

Both statements A and B are incorrect

Option B (Both statements A and B are incorrect) is correct because the Organ of Corti rests on the basilar membrane, not the tectorial membrane, and it is responsible for hearing, not equilibrium.

Revision notes and key takeaways

Review NEURAL CONTROL AND COORDINATION in your textbook or class notes, then use this set to check your understanding.

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Neural control and coordination practice · Mixed difficulty

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