(D) In the resting state,the axonal membrane of a neuron is significantly more permeable to potassium ions $(K^+)$ due to the presence of leak channel

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comparatively more permeable to $K^+$ ions and nearly impermeable to $Na^+$ ions.

(D) In the resting state,the axonal membrane of a neuron is significantly more permeable to potassium ions $(K^+)$ due to the presence of leak channels,while it remains nearly impermeable to sodium ions $(Na^+)$.This differential permeability,combined with the action of the $Na^+-K^+$ pump,helps maintain the resting membrane potential.

Class 11 Biology Neural Control and Coordination Generation and conduction of Nerve Impulse

Medium

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

AIPMT 2011 All AIPMT

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.