Which of the following is not true of resting potential of a typical neuron?
1. The inside of the cell is more negative than is the outside
2. There are concentration gradients with more sodium outside the cell and a higher potassium concentration inside the cell
3. It is about 70 mV and can be measured by using microelectrodes placed inside and outside the cell.
4. It is formed by the sequential opening of voltage-gated channels.
Subtopic: Â Action Potential |
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Level 3: 35%-60%
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When the first walk from a brightly lit area into darkness, which of the following occur?
1. The pohtopsin of cones become bleached
2. Rod cells become hyperpolarized
3. Lateral inhibition caused by horizontal cells ceases.
4. Rhodopsin is still dissociated into retinal and opsin, and rods, are temporarily non-functional
1. The pohtopsin of cones become bleached
2. Rod cells become hyperpolarized
3. Lateral inhibition caused by horizontal cells ceases.
4. Rhodopsin is still dissociated into retinal and opsin, and rods, are temporarily non-functional
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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
1. Reaction potential
2. Resting potential
3. Spike potential
4. Action potential
Subtopic: Â Origin of Resting Membrane Potential |
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Level 1: 80%+
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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: Â Nervous System |
Level 3: 35%-60%
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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: Â Neuroanatomy |
 70%
Level 2: 60%+
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 | S | R |
| 2. | Q | R | S | P |
| 3. | R | S | P | Q |
| 4. | S | P | Q | R |
Subtopic: Â Nervous System |
 68%
Level 2: 60%+
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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 |
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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: Â Nervous System |
 89%
Level 1: 80%+
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NEET 2026 - Target Batch - Vital
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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: Â Nervous System |
 92%
Level 1: 80%+
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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: Â Nervous System |
 67%
Level 2: 60%+
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