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Q. No.What restores the resting membrane potential of the axonal membrane at the site of excitation?
1. Influx of sodium ions
2. Efflux of sodium ions
3. Influx of potassium ions
4. Efflux of potassium ions
Subtopic: Origin of Resting Membrane Potential | Action Potential |
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Dysfunction of which of the following parts of the human brain is most likely to affect learning and memory?
1. Pons
2. Hippocampus
3. Cerebellum
4. Hypothalamus
1. Pons
2. Hippocampus
3. Cerebellum
4. Hypothalamus
Subtopic: Diencephalon |
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Consider the given two statements:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | In a neuron, Nissl’s granules are present in dendrites as well as cell body |
| II: | Unmyelinated neurons in peripheral neural system are not enclosed by a Schwann cell |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Nervous System |
64%
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What restores the resting potential of the membrane at the site of excitation?
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 |
58%
From NCERT
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Cerebellum is mainly involved in:
1. consciousness
2. muscle coordination
3. homeostasis
4. sense reception
1. consciousness
2. muscle coordination
3. homeostasis
4. sense reception
Subtopic: Hind & Mid Brain |
From NCERT
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Which of the following events is likely to happen if diffusion of ions is allowed in a resting polarized axonal membrane?
1. Na+ will move out of the cell
2. Na+ will move into the cell
3. K+ will move into the cell
4. Na+ and K+ will both move out of the cell
1. Na+ will move out of the cell
2. Na+ will move into the cell
3. K+ will move into the cell
4. Na+ and K+ will both move out of the cell
Subtopic: Action Potential |
63%
From NCERT
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How many of the given statements are correct?
1. 0
2. 1
3. 2
4. 3
| I: | Hind brain and midbrain make up the brain stem. |
| II: | The hindbrain comprises pons, cerebellum and medulla. |
| III: | The forebrain consists of cerebrum, thalamus and hypothalamus. |
2. 1
3. 2
4. 3
Subtopic: Hind & Mid Brain | Fore Brain |
54%
From NCERT
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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 |
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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 |
57%
From NCERT
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Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | Depolarisation of axonal membrane is due to influx of sodium ions. |
| Statement II: | Repolarisation of axonal membrane is due to efflux of sodium ions. |
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Origin of Resting Membrane Potential | Action Potential |
63%
From NCERT
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