What causes repolarization? Why does repolarization occur? A)The inactivation ga

ID: 67270 • Letter: W

Question

What causes repolarization?

Why does repolarization occur?

A)The inactivation gates of voltage-gated Na+ ion channels open and the diffusion of Na+ ions decreases.

B)More sodium ions diffuse into the cell than potassium ions diffuse out of it.

C)An efflux of K+ ions causes the membrane potential to become slightly more positive than the resting value.

D)K+ ions continue to diffuse out of the cell after the inactivation gates of voltage-gated Na+ ion channels close.

E)The increase in K+ ion permeability lasts longer than the time required to bring the membrane potential back to its resting level.

B) More sodium ions diffuse into the cell than potassium ions diffuse out of it.

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