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When a neuron is in resting state i.e. n...

When a neuron is in resting state i.e. not conducting any impulse, the axonal membrane is

A

Comparatively more permeable to `Na^(+)` ions and nearly impermeable to `K^(+)` ions

B

Equally permeable to both `Na^(+)` and `K^(+)` ions

C

Impermeable to both `Na^(+)` and `K^(+)` ions

D

Comparatively more permeable to `K^(+)` ions and nearly impermeable to `Na^(+)` ions

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The correct Answer is:
D
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Assertion : When a neuron is not conducting any impulse, i.e. resting, the axoplasm inside the axon contains high concentration of K^(+) and negatively charged proteins and low concentration of Na^(+) . Reason : In resting, the axonal membrane is comparatively more permeable to K^(+) ions and nearly impermeable to Na^(+) ions. Similarly, the membrane is impermeable to negatively charged proteins present in axoplasm

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