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Q. No.Identify the incorrect match:
1.
Reticular formation
Gatekeeper to consciousness
2.
Thalamus
Major relay centre in diencephalon for messages to the cortex
3.
Superior colliculi
Part of limbic system for emotional behaviour
4.
Pons
Part of hindbrain having nuclei for control of breathing rate
Subtopic: Hind & Mid Brain | Diencephalon |
59%
Level 3: 35%-60%
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If the resting membrane of an excitable cell is made permeable to all ions, which of the following is least likely to happen?
1. Efflux of potassium
2. Influx of sodium
3. Influx of chloride
4. Efflux of sodium
Subtopic: Origin of Resting Membrane Potential |
Level 3: 35%-60%
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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 |
67%
Level 2: 60%+
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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
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 |
58%
Level 3: 35%-60%
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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 |
57%
Level 3: 35%-60%
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As a nerve impulse passes along an axon:
1. The membrane potential changes from positive to negative and then back again
2. Sodium ions flow out through ion channels and potassium ions flow in
3. Sodium channels open as the membrane potential becomes less negative
4. The sodium-potassium pump moves sodium ions into the cell
1. The membrane potential changes from positive to negative and then back again
2. Sodium ions flow out through ion channels and potassium ions flow in
3. Sodium channels open as the membrane potential becomes less negative
4. The sodium-potassium pump moves sodium ions into the cell
Subtopic: Origin of Resting Membrane Potential | Action Potential |
Level 3: 35%-60%
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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 |
Level 3: 35%-60%
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Myelination of axons of the central nervous system is brought about by:
| 1. | microglia | 2. | asrocytes |
| 3. | oligodendrocytes | 4. | Schwann cells |
Subtopic: Nervous System |
58%
Level 3: 35%-60%
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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 |
58%
Level 3: 35%-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 |
58%
Level 3: 35%-60%
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