During the peak of the action potential which ion has the greatest permeability?
A) sodium.
B) potassium.
C) calcium.
D) chloride.
E) protein.

Question

Quizplus · Accepted Answer

During the peak of the action potential, the voltage-gated potassium channels open fully, increasing the permeability of potassium ions and causing a rapid efflux of K+ ions, resulting in repolarization of the membrane potential. Therefore, potassium has the greatest permeability during the peak of the action potential.

During the Peak of the Action Potential Which Ion Has