The depolarization phase of the action potential is generated by a rapid
A) closure of sodium channels.
B) closure of potassium channels.
C) opening of chloride channels.
D) opening of potassium channels.
E) opening of sodium channels.

Question

Quizplus · Accepted Answer

The depolarization phase of the action potential is generated by a rapid opening of sodium channels, allowing Na+ ions to enter the cell, which increases the cell's internal charge.

The Depolarization Phase of the Action Potential Is Generated by a Rapid