In an action potential, depolarization occurs when
A) sodium ions move to the inside of the axon.
B) sodium ions move to the outside of the axon.
C) potassium ions move to the inside of the axon.
D) potassium ions move to the outside of the axon.
E) chlorine ions move to the outside of the axon.

Question

Quizplus · Accepted Answer

Depolarization occurs when sodium ions move into the axon, causing the inside of the axon to become more positively charged. This triggers the opening of voltage-gated ion channels and the continuation of the action potential.

In an Action Potential, Depolarization Occurs When