When a stimulus is applied to the membrane of a neuron,it causes a rapid influx of

At the site of stimulation,the charge of the inner and outer surface of the membrane becomes reversed due to:

Assertion: The imbalance in concentration of $Na^+$,$K^+$ and proteins generates resting potential.
Reason: To maintain the unequal distribution of $Na^+$ and $K^+$,the neurons use electrical energy.

For the maintenance of ionic gradients across the resting membrane,the sodium-potassium pump transports:

Chronaxie is defined as:

$A$: Presence of myelin sheath increases the rate of conduction of nerve impulse.
$R$: Ionic channels are absent in the area covered by myelin sheath; therefore,depolarization occurs only at the nodes of Ranvier,resulting in saltatory or jumping conduction.