The Hyperpolarization That Occurs at the End of an Action

Multiple Choice

The hyperpolarization that occurs at the end of an action potential is due to the prolonged

A) open state of voltage-gated sodium channels.
B) closure of chemically gated sodium channels.
C) open state of voltage-gated potassium channels.
D) closure of voltage-gated potassium channels.
E) open state of chemically gated sodium channels.