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NEET • BIOLOGY • NEURAL CONTROL AND COORDINATION

Neural control and coordination practice · Mixed difficulty

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Showing 1-30 of 298 questions

1 Medium

1 of 298

Remembering +4 | -1

How many laminae are present in the grey matter of spinal cord?

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Correct option: D

Ten

Option D is correct. The grey matter of the spinal cord is organized into ten distinct laminae, known as Rexed laminae.

2 Easy

2 of 298

Understanding +4 | -1

By which nervous system and of what type, the blood is supplied into visceral organs?

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Correct option: D

Both SNS and PNS, involuntary

Option D (Both SNS and PNS, involuntary) is correct because both sympathetic and parasympathetic nervous systems, which are involuntary, supply blood to visceral organs.

3 Easy

3 of 298

Remembering +4 | -1

Cells of Schwann are associated with

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Correct option: C

Cardiac muscle

Option A (Nervous tissue) is correct because Schwann cells are a type of glial cell found in nervous tissue, specifically in the peripheral nervous system.

4 Hard

4 of 298

Remembering +4 | -1

The vagus nerve is the cranial nerve numbering:

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Correct option: A

10^{\text {th }}

Option A (

10^{\text {th }}

) is correct because the vagus nerve is the tenth cranial nerve (CN X).

5 Easy

5 of 298

Understanding +4 | -1

Which of the following statements are correct for RAS?
I. It screens sensory information
II. It is important in overall activation and arousal
III. It is concerned with involuntary movements
IV. It is the seat of learning, memory, reasoning and creative ability

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Correct option: A

I and II

Option A (I and II) is correct because the Reticular Activating System (RAS) screens sensory information and is important for overall activation and arousal.

6 Easy

6 of 298

Remembering +4 | -1

Which of the following neuron is also called excitor neuron?

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Correct option: B

Efferent neuron

Option B (Efferent neuron) is correct because efferent neurons transmit signals away from the central nervous system, causing excitation or action in target cells.

7 Easy

7 of 298

Understanding +4 | -1

Choose the correct statement

View answer and explanation

Correct option: B

Electrical synapse are rare in our system

Option B (Electrical synapse are rare in our system) is correct because electrical synapses are less common than chemical synapses in the human nervous system.

8 Hard

8 of 298

Remembering +4 | -1

Myelin sheath is produced by

\underline{X}

in CNS and

\underline{Y}

in PNS. Choose the option that fill the blanks correctly

View answer and explanation

Correct option: A

Oligodendrocytes - Schwann cells

Option A (Oligodendrocytes - Schwann cells) is correct because oligodendrocytes produce myelin in the CNS, while Schwann cells produce myelin in the PNS.

9 Medium

9 of 298

Remembering +4 | -1

In a resting neuron, the axonal membrane is more permeable for which of the following ions?

View answer and explanation

Correct option: B

{K^ + }

Option B (

{K^ + }

) is correct because the axonal membrane is more permeable to potassium ions (

{K^ + }

) in a resting neuron, contributing to the resting membrane potential.

10 Medium

10 of 298

Remembering +4 | -1

Which of the damaged cells cannot be repaired?

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Correct option: B

Brain cells

Option B is correct. Brain cells, particularly neurons, have limited regenerative capacity, making it difficult to repair damaged brain tissue.

11 Easy

11 of 298

Remembering +4 | -1

Which is a part of spinal cord?

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Correct option: A

Central canal

Option A is correct. The central canal is a fluid-filled space that runs the length of the spinal cord.

12 Easy

12 of 298

Remembering +4 | -1

A structure of neuron comprises of

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Correct option: D

Cell body, dendrites, axon

Option D (Cell body, dendrites, axon) is correct because these are the three main structural components of a neuron.

13 Medium

13 of 298

Remembering +4 | -1

The nerve cells exercise its control by sending electrical signals called

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Correct option: D

Nerve impulses

Option D (Nerve impulses) is correct because nerve cells communicate using electrical signals specifically called nerve impulses.

14 Hard

14 of 298

Remembering +4 | -1

Meniere's disease is associated with

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Correct option: A

ear

Option A (ear) is correct because Meniere's disease is a disorder of the inner ear that causes vertigo, tinnitus, and hearing loss.

15 Medium

15 of 298

Remembering +4 | -1

A nerve impulse is transmitted from one neuron to another through the junctions called

View answer and explanation

Correct option: C

Neurosynaptic junction

Option C (Neurosynaptic junction) is correct because a nerve impulse is transmitted from one neuron to another through a neurosynaptic junction, commonly referred to as a synapse.

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16 Hard

16 of 298

Remembering +4 | -1

Bipolar neurons are found in human ______

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Correct option: D

Olfactory epithelium

Option D (Olfactory epithelium) is correct because bipolar neurons, which have one axon and one dendrite, are found in the olfactory epithelium of humans.

17 Easy

17 of 298

Remembering +4 | -1

When the stimulus reaches the end of one neuron, it is conducted to the adjacent neuron through the secretions of

View answer and explanation

Correct option: B

Acetylcholine

Option B is correct. Acetylcholine is a neurotransmitter that is released at the synapse to conduct the stimulus to the adjacent neuron.

18 Hard

18 of 298

Application +4 | -1

The far point of a near sighted person is

6.0 \mathrm{~m}

from her eyes, and she wears contacts that enable her to see distant objects clearly. A tree is

18.0 \mathrm{~m}

away and 2.0 high. How high is the image formed by the contacts?

View answer and explanation

Correct option: D

0.50 \mathrm{~m}

Option D (0.50 m) is correct because the contacts correct the nearsightedness, effectively moving the far point to infinity, and the image height is proportional to the ratio of the far point to the object distance.

19 Easy

19 of 298

Remembering +4 | -1

The sympathetic and parasympathetic neural system combines to form

View answer and explanation

Correct option: B

Autonomic neural system

Option B (Autonomic neural system) is correct because it is formed by the combination of the sympathetic and parasympathetic neural systems.

20 Medium

20 of 298

Understanding +4 | -1

Which of the following is correct in case of chemical synapses?
I. The membranes of the pre and postsynaptic neurons are separated by a gap called synaptic cleft
II. Chemicals called neurotransmitters are involved in the transmission of impulses
III. Impulse transmission in chemical synapse is faster than that across an electrical synapse
IV. Chemical synapses are rare in our system

View answer and explanation

Correct option: C

I and II

Option C (I and II) is correct because chemical synapses involve a synaptic cleft and neurotransmitters for impulse transmission.

21 Hard

21 of 298

Remembering +4 | -1

The shape of eye lens is changed by

View answer and explanation

Correct option: D

Ciliary muscle

Option D (Ciliary muscle) is correct because the ciliary muscle contracts and relaxes to change the shape of the lens, allowing the eye to focus on objects at different distances.

22 Easy

22 of 298

Remembering +4 | -1

Nissils granules are present in

View answer and explanation

Correct option: C

Cyton, Dentrites

Option C (Cyton, Dentrites) is correct because Nissl's granules are found in the cyton (cell body) and dendrites of neurons, not in axons.

23 Hard

23 of 298

Understanding +4 | -1

How many of the following statements are correct

(i) Photoreceptors in the human eye are depolarised during darkness

(ii) Receptors produce graded potentials

(iii) Retinal is a light absorbing part of all the visual photopigments

(iv) Photopigments are embeded in the membrane discs of the outer segment

View answer and explanation

Correct option: A

Option A (4) is correct because all four statements about photoreceptors and visual photopigments are accurate.

24 Medium

24 of 298

Analyzing +4 | -1

How many of the following are not included in the human hindbrain?
Medulla oblongata, Thalamus, Corpora qudrigemina, Pons, Cerebrum, Cerebellum

View answer and explanation

Correct option: B

Three

Option B (Three) is correct because Thalamus, Corpora quadrigemina, and Cerebrum are not part of the hindbrain.

25 Easy

25 of 298

Remembering +4 | -1

Coiled portion of the labyrinth is called

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Correct option: A

Cochlea

Option A (Cochlea) is correct because the cochlea is the coiled portion of the bony labyrinth in the inner ear responsible for hearing.

26 Hard

26 of 298

Remembering +4 | -1

The crystal of lead zirconate is a key component of:

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Correct option: D

Sonography

Option D (Sonography) is correct because lead zirconate crystals are piezoelectric and used in ultrasound transducers for sonography.

27 Hard

27 of 298

Remembering +4 | -1

The function of Eustachian tube is to equalise pressure on either side of

View answer and explanation

Correct option: C

Tympanic membrane

Option C (Tympanic membrane) is correct because the Eustachian tube connects the middle ear to the nasopharynx, allowing for pressure equalization on both sides of the tympanic membrane.

28 Easy

28 of 298

Understanding +4 | -1

One of the examples of the action of the autonomous nervous system is

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Correct option: D

Peristalsis of the intestines

Option D (Peristalsis of the intestines) is correct because peristalsis is an involuntary movement controlled by the autonomic nervous system.

29 Easy

29 of 298

Remembering +4 | -1

The most appropriate definition for neuroglial cells are that they are

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Correct option: A

Non-sensory supporting cells

Option A (Non-sensory supporting cells) is correct because neuroglial cells provide support and protection to neurons without directly participating in sensory functions.

30 Medium

30 of 298

Understanding +4 | -1

Which is not a reflex action?

View answer and explanation

Correct option: B

Eye opening and closing

The correct answer is B (Eye opening and closing) because it can be a voluntary action, unlike the other options which are involuntary reflex actions.

Revision notes and key takeaways

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Key Takeaways

✓ This set contains 298 single-correct-answer MCQs on NEURAL CONTROL AND COORDINATION.
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