Which of the following is responsible for the rapid depolarization phase of an action potential within the pacemaker cells? A) an increase in P_Na B) a decrease in P_K C) a decrease in P_Na D) an increase in P_K E) an increase in P_Ca

Question

Quizplus · Accepted Answer

The rapid depolarization phase of an action potential within the pacemaker cells is primarily due to an increase in calcium ion (Ca2+) permeability (an increase in P_Ca).

Which of the Following Is Responsible for the Rapid Depolarization