What happens to the sodium molecule at the initiation of an action potential?
A)It moves outside the cell.
B)It moves inside the cell.
C)It moves down the axon.
D)It moves toward the end of the terminal button.

Question

Quizplus · Accepted Answer

At the initiation of an action potential, the voltage-gated sodium channels open, allowing sodium ions to move from outside the cell to inside the cell. This influx of positive charge depolarizes the membrane and triggers the action potential to propagate down the axon.

What Happens to the Sodium Molecule at the Initiation of an Action