Immediately after an action potential is propagated, which one of the following ions rapidly diffuses out of the cell into the tissue fluid ________.
A) sodium
B) chloride
C) calcium
D) potassium
E) magnesium

Question

Quizplus · Accepted Answer

After an action potential is propagated, potassium ions rapidly diffuse out of the cell into the tissue fluid. This is because during the repolarization phase of the action potential, the voltage-gated potassium channels open and allow potassium ions to move down their concentration gradient out of the cell.

Immediately After an Action Potential Is Propagated, Which One of the Following