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Q. No.Given below are two statements:
Assertion (A):
All the organs in our body work in a synchronised function
Reason (R):
Neural and endocrine systems jointly coordinate and integrate all the activities of organs
1.
Both (A) and (R) are True and (R) is the correct explanation of (A).
2.
Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.
(A) is True but (R) is False.
4.
Both (A) and (R) are False.
Subtopic: Nervous System |
86%
Level 1: 80%+
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Given below are two statements:
| Assertion (A): | Membranes of neurons are in a polarised state under resting conditions |
| Reason (R): | This is due to differential distribution of Na+, K+ ions and negatively charged proteins across the axonal membranes |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Origin of Resting Membrane Potential |
92%
Level 1: 80%+
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Subtopic: Diencephalon |
94%
Level 1: 80%+
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An action potential in the nerve fibre is produced when positive and negative charges on the outside and the inside of the axon membrane are reversed, because
| 1. | More potassium enters the axon as compared to sodium ions leaving it |
| 2. | More sodium enters the axon as compared to potassium ions leaving it |
| 3. | All potassium ions leave the axon |
| 4. | All sodium ions enter the axon |
Subtopic: Action Potential |
81%
Level 1: 80%+
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The cranial meninge which is in contact with the brain tissue is called:
1. dura mater
2. arachanoid mater
3. pia mater
4. gray mater
1. dura mater
2. arachanoid mater
3. pia mater
4. gray mater
Subtopic: Nervous System | Fore Brain |
86%
Level 1: 80%+
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Which of the following factor is responsible for resting membrane potential?
| 1. | More permeability of membrane for Na+ |
| 2. | More permeability of membrane for K+ |
| 3. | Presence of negatively charged protein molecule outside the neuron |
| 4. | Presence of positively charged protein molecule on inner side of the neuron |
Subtopic: Origin of Resting Membrane Potential |
81%
Level 1: 80%+
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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 kidneys
1. Only (d)
2. (a) and (d)
3. (a), (b) and (c)
4. (a), (b), (c), (d)
(a) Balance of the body
(b) Circadian rhythm of the body
(c) Human behaviour
(d) Functioning of heart and kidneys
1. Only (d)
2. (a) and (d)
3. (a), (b) and (c)
4. (a), (b), (c), (d)
Subtopic: Hind & Mid Brain | Fore Brain |
85%
Level 1: 80%+
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Match the columns
1. a(i), b(iii), c(ii), d(iv)
2. a(ii), b(i), c(ii), d(iv)
3. a(iv), b(ii), c(i), d(iii)
4. a(i), b(ii), c(iii), d(iv)
| Column I | Column II | ||
| (a) | Bipolar neuron | (i) | Schwann cells |
| (b) | Myelin sheath | (ii) | Cerebral cortex |
| (c) | Multipolar nuron | (iii) | Retina of eye |
| (d) | Unmyelinated nerve fibres | (iv) | Autonomic neural system |
1. a(i), b(iii), c(ii), d(iv)
2. a(ii), b(i), c(ii), d(iv)
3. a(iv), b(ii), c(i), d(iii)
4. a(i), b(ii), c(iii), d(iv)
Subtopic: Nervous System | Hind & Mid Brain | Fore Brain |
84%
Level 1: 80%+
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Depolarisation of neural membranes is caused due to
1. Rapid influx of Na+ ions
2. Rapid influx of K+ ions
3. Rapid efflux of Na+ ions
4. Rapid influx of Cl- ions
1. Rapid influx of Na+ ions
2. Rapid influx of K+ ions
3. Rapid efflux of Na+ ions
4. Rapid influx of Cl- ions
Subtopic: Origin of Resting Membrane Potential | Action Potential |
84%
Level 1: 80%+
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The parts of the human brain that help in the regulation of sexual behavior, expression of excitement, pleasure, rage, fear, etc. are:
1. Corpus callosum and thalamus
2. Limbic system & hypothalamus
3. Corpora quadrigemina & hippocampus
4. Brain stem & epithalamus
1. Corpus callosum and thalamus
2. Limbic system & hypothalamus
3. Corpora quadrigemina & hippocampus
4. Brain stem & epithalamus
Subtopic: Diencephalon |
90%
Level 1: 80%+
NEET - 2023
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