The action potential of a nerve cell is approximately:

The velocity of a nerve impulse is greater in:

$A$ neuron becomes an electrically charged cell primarily due to the differential permeability and diffusion of which ion?

Which of the following represents a polarized nerve membrane?

An action potential in a nerve fiber is generated when the outer surface is positive and the inner surface is negative,and the membrane potential is reversed because...

In the resting stage of a neuron,the concentration gradient allows the diffusion of which ions?