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Q. No.Which of the following correctly describes the path an action potential travels in a neuron?
1.
Dendrites → Cell body → Axon hillock → Axon → Synaptic terminals
2.
Axon → Cell body → Dendrites → Synaptic terminals → Axon hillock
3.
Synaptic terminals → Axon hillock → Axon → Cell body → Dendrites
4.
Cell body → Dendrites → Axon → Axon hillock → Synaptic terminals
Subtopic: Action Potential |
98%
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In a reflex arc, which sequence correctly represents the order of components activated?
| 1. | Effector → Sensory neuron → Interneuron → Motor neuron → Receptor |
| 2. | Receptor → Motor neuron → Interneuron → Sensory neuron → Effector |
| 3. | Receptor → Sensory neuron → Interneuron → Motor neuron → Effector |
| 4. | Sensory neuron → Effector → Receptor → Motor neuron → Interneuron |
Subtopic: Synapse |
79%
From NCERT
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The corpora quadrigemina are four rounded protrusions located in the:
1. Dorsal part of the midbrain
2. Ventral part of the midbrain
3. Dorsal part of the hindbrain
4. Ventral part of the hindbrain
1. Dorsal part of the midbrain
2. Ventral part of the midbrain
3. Dorsal part of the hindbrain
4. Ventral part of the hindbrain
Subtopic: Hind & Mid Brain |
93%
From NCERT
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The medulla does not contain the centre which controls
1. respiration
2. cardiovascular reflexes
3. gastric secretions
4. hunger and satiety
1. respiration
2. cardiovascular reflexes
3. gastric secretions
4. hunger and satiety
Subtopic: Hind & Mid Brain |
94%
From NCERT
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Which of the following sequences correctly represents the chronological order of events during synaptic transmission at a chemical synapse?
| 1. | Arrival of action potential at presynaptic terminal → Binding of neurotransmitters to postsynaptic receptors → Release of neurotransmitters into the synaptic cleft → Opening of calcium channels |
| 2. | Arrival of action potential at presynaptic terminal → Opening of calcium channels → Release of neurotransmitters into the synaptic cleft → Binding of neurotransmitters to postsynaptic receptors |
| 3. | Binding of neurotransmitters to postsynaptic receptors → Opening of calcium channels → Arrival of action potential at presynaptic terminal → Release of neurotransmitters into the synaptic cleft |
| 4. | Release of neurotransmitters into the synaptic cleft → Arrival of action potential at presynaptic terminal → Opening of calcium channels → Binding of neurotransmitters to postsynaptic receptors |
Subtopic: Synapse |
87%
From NCERT
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How many of the given statements are true?
1. 1
2. 2
3. 3
4. 4
| I: | The PNS is divided into two divisions called somatic neural system and autonomic neural system. |
| II: | The somatic neural system relays impulses from the CNS to skeletal muscles while the autonomic neural system transmits impulses from the CNS to the involuntary organs and smooth muscles of the body. |
| III: | The autonomic neural system is further classified into sympathetic neural system and parasympathetic neural system. |
| IV: | Visceral nervous system is the part of the peripheral nervous system that comprises the whole complex of nerves, fibres, ganglia, and plexuses by which impulses travel from the central nervous system to the viscera and from the viscera to the central nervous system. |
1. 1
2. 2
3. 3
4. 4
Subtopic: Nervous System |
91%
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: | Sensory nerves consist of nerve fibers that conduct impulses toward the central nervous system (CNS). |
| Statement II: | Motor nerves consist of nerve fibers that conduct impulses away from the CNS. |
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: Nervous System |
96%
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Which part of the brain is responsible for maintaining posture and balance?
1. Cerebrum
2. Cerebellum
3. Medulla oblongata
4. Hypothalamus
1. Cerebrum
2. Cerebellum
3. Medulla oblongata
4. Hypothalamus
Subtopic: Hind & Mid Brain |
83%
From NCERT
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Match Column I with Column II:
Codes:
| Column I | Column II | ||
| A | Sensory neurons | P | carry signals from the CNS to effectors (muscles or glands) |
| B | Motor neurons | Q | connect sensory and motor neurons |
| C | Interneurons | R | transmit signals from sensory receptors to the central nervous system |
| A | B | C | |
| 1. | P | Q | R |
| 2. | Q | P | R |
| 3. | R | P | Q |
| 4. | R | Q | P |
Subtopic: Nervous System |
56%
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Which statement about the limbic system is correct?
| 1. | The limbic system is primarily involved in controlling voluntary movements. |
| 2. | It is primarily responsible for the regulation of vision and hearing. |
| 3. | The limbic system is involved in emotion, memory, and arousal. |
| 4. | It coordinates high cognitive functions like reasoning and language. |
Subtopic: Fore Brain |
87%
From NCERT
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