For the repolarization phase of an SA nodal cell action potential,
A) sodium and potassium channels open.
B) calcium channels open and sodium channels close.
C) calcium and potassium channels close.
D) calcium channels close and potassium channels open.
E) sodium and chloride channels open.

Question

Quizplus · Accepted Answer

During the repolarization phase of an SA nodal cell action potential, calcium channels close and potassium channels open, allowing potassium to exit the cell and bringing the membrane potential back to its resting state.

For the Repolarization Phase of an SA Nodal Cell Action