In the Sequence of Permeability Changes for a Complete Action

Multiple Choice

In the sequence of permeability changes for a complete action potential, the first of these events that occurs is

A) the activation of the sodium-potassium "pump."
B) the inhibition of the sodium-potassium "pump."
C) the opening of voltage-gated sodium channels.
D) the closing of voltage-gated potassium channels.
E) the opening of voltage-gated potassium channels.