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Q. No.Consider the given two statements:
Assertion (A):
Neurons are excitable cells.
Reason (R):
The membrane of neurons is polarised.
1.
Both (A) and (R) are True and (R) correctly explains the (A).
2.
Both (A) and (R) are True but (R) does not correctly explain the (A).
3.
(A) is True but (R) is False.
4.
Both (A) and (R) are False.
Subtopic: Nervous System |
88%
Level 1: 80%+
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Which cranial meninge is in contact with the brain tissue?
| 1. | Dura mater | 2. | Arachnoid mater |
| 3. | Pia mater | 4. | Grey mater |
Subtopic: Nervous System | Neuroanatomy |
87%
Level 1: 80%+
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Which part of our brain is involved in thermoregulation and osmoregulation?
1. Corpora quadrigemina
2. Cerebellum
3. Hypothalamus
4. Pons varolii
1. Corpora quadrigemina
2. Cerebellum
3. Hypothalamus
4. Pons varolii
Subtopic: Fore Brain |
86%
Level 1: 80%+
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The depolarisation of the polarised axonal membrane is primarily due to:
1. Influx of sodium ions
2. Influx of potassium ions
3. Efflux of sodium ions
4. Efflux of potassium ions
1. Influx of sodium ions
2. Influx of potassium ions
3. Efflux of sodium ions
4. Efflux of potassium ions
Subtopic: Action Potential |
78%
Level 2: 60%+
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The sodium potassium pump transports:
1. three sodium ions from outside to inside a cell.
2. three sodium ions from inside to outside a cell.
3. two potassium ions from outside to inside a cell.
4. Both 2 and 3
1. three sodium ions from outside to inside a cell.
2. three sodium ions from inside to outside a cell.
3. two potassium ions from outside to inside a cell.
4. Both 2 and 3
Subtopic: Action Potential |
Level 4: Below 35%
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What restores the resting potential of the axonal membrane at the site of excitation after depolarisation?
1. Influx of sodium ions
2. Influx of potassium ions
3. Efflux of sodium ions
4. Efflux of potassium ions
1. Influx of sodium ions
2. Influx of potassium ions
3. Efflux of sodium ions
4. Efflux of potassium ions
Subtopic: Origin of Resting Membrane Potential | Action Potential |
60%
Level 2: 60%+
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Nissl’s granules are found in:
I: Soma of the neuron
II: Dendrites of the neuron
III: Axon of the neuron
I: Soma of the neuron
II: Dendrites of the neuron
III: Axon of the neuron
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
Subtopic: Nervous System |
78%
Level 2: 60%+
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In the peripheral neural system, Schwann cells surround the axons of:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | Myelinated nerve fibres |
| II: | Unmyelinated nerve fibres |
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Nervous System |
57%
Level 3: 35%-60%
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The cerebral aqueduct is a narrow 15 mm conduit for cerebrospinal fluid (CSF) that passes through the:
1. Corpus callosum
2. Diencephalon
3. Mid brain
4. Medulla oblongata
1. Corpus callosum
2. Diencephalon
3. Mid brain
4. Medulla oblongata
Subtopic: Hind & Mid Brain |
82%
Level 1: 80%+
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When an adequate strength of the stimulus is applied to a resting axonal membrane, which of the following will lead to depolarization and the development of action potential?
1. Efflux of sodium ions
2. Influx of sodium ions
3. Influx of potassium ions
4. Efflux of potassium ions
1. Efflux of sodium ions
2. Influx of sodium ions
3. Influx of potassium ions
4. Efflux of potassium ions
Subtopic: Origin of Resting Membrane Potential | Action Potential |
81%
Level 1: 80%+
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