Potassium ion channels open
A) as the action potential passes down the axon.
B) when the threshold potential is reached.
C) during the resting potential.
D) when the action potential reaches the axon terminal.
E) when neurotransmitters attach to dendrite receptors.

Question

Quizplus · Accepted Answer

Potassium ion channels open as the action potential passes down the axon, allowing for repolarization of the membrane potential.

Potassium Ion Channels Open