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Q. No.The pre-excitation potential difference between the outside and inside of a neuron is called:
1. Reaction potential
2. Resting potential
3. Spike potential
4. Action potential
Subtopic: Origin of Resting Membrane Potential |
80%
From NCERT
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Reflex action has all of the following features, except:
| 1. | Receiving of signal from a sensory organ |
| 2. | Transmission of impulsive into the central nervous system through effector organ |
| 3. | Carrying of signal from the central nervous system to the effector |
| 4. | Response to an involuntary peripheral nervous stimulation |
Subtopic: Nervous System |
From NCERT
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Match List-I with List-II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (a) | Multipolar neuron | (i) | Somatic neural system |
| (b) | Bipolar neuron | (ii) | Cerebral cortex |
| (c) | Myelinated nerve fibre | (iii) | Retina of Eye |
| (d) | Unmyelinated nerve fibre | (iv) | Spinal nerves |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (i) | (iv) | (ii) |
| 2. | (ii) | (iv) | (iii) | (i) |
| 3. | (ii) | (iii) | (i) | (iv) |
| 4. | (ii) | (iii) | (iv) | (i) |
Subtopic: Neuroanatomy |
69%
From NCERT
NEET - 2022
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| Column I | Column II |
| A. Peripheral neural system | P. Comprises of all nerves associated with brain and spinal cord |
| B. Somatic neural system | Q. Relays impulses from CNS to skeletal muscles |
| C. Visceral neural system | R. Transmits impulse from CNS to involuntary organs and smooth muscles |
| D. Autonomic neural system | S. Part of PNS where impulses travel from CNS to the viscera and from the viscera to the CNS |
| A | B | C | D | |
| 1. | P | Q | R | S |
| 2. | Q | R | S | P |
| 3. | R | S | P | Q |
| 4. | S | P | Q | R |
Subtopic: Nervous System | Autonomic Nervous System (OLD NCERT) |
68%
From NCERT
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Sympathetic and parasympathetic neural systems are divisions of:
| 1. CNS | 2. Somatic neural system |
| 3. Autonomic neural system | 4. Visceral neural system |
Subtopic: Autonomic Nervous System (OLD NCERT) |
89%
From NCERT
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In a neuron, Nissl’s granules are seen in:
| I. Cell body | II. Dendrites | III. Axon |
| 1. I and II only | 2. I and III only |
| 3. II and III only | 4. I, II and III |
Subtopic: Nervous System |
89%
From NCERT
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Code:
| Column I | Column II | ||
| A. | Multipolar neuron | P. | Embryonic stage |
| B. | Bipolar neuron | Q. | Retina |
| C. | Unipolar neuron | R. | Cerebral cortex |
| A | B | C | |
| 1. | P | Q | R |
| 2. | Q | R | P |
| 3. | R | Q | P |
| 4. | R | P | Q |
Subtopic: Nervous System |
92%
From NCERT
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Consider the given statements:
| I: | Myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon. |
| II: | Unmyelinated nerve fibre is not enclosed by a Schwann cell or a myelin sheath. |
| III: | Myelinated nerve fibres are found in spinal and cranial nerves. |
| IV: | Unmyelinated nerve fibres are commonly found in autonomous and somatic neural systems. |
| 1. | Only II is incorrect | 2. | I and II are correct |
| 3. | III and IV are incorrect | 4. | All are correct |
Subtopic: Nervous System |
67%
From NCERT
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | Neurons are excitable cells. |
| Reason (R): | Their membranes are in a polarised state. |
| 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. | (A) is False but (R) is True. |
Subtopic: Origin of Resting Membrane Potential | Action Potential |
87%
From NCERT
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When the neuron is not conducting any impulse, i.e., resting, the axonal membrane:
| 1. | is comparatively more permeable to sodium ions and nearly impermeable to potassium ions. |
| 2. | is freely permeable to sodium ions and potassium ions. |
| 3. | is impermeable to sodium ions and potassium ions. |
| 4. | is comparatively more permeable to potassium ions and nearly impermeable to sodium ions. |
Subtopic: Origin of Resting Membrane Potential | Action Potential |
89%
From NCERT
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