The ion primarily responsible for depolarization in pacemaker cells is ________, whereas the ion primarily responsible for this in other cardiac cells is ________. A) Na⁺; Ca²⁺ B) Ca²⁺; Na⁺ C) K⁺; Na⁺ D) Ca²⁺; K⁺

Question

Quizplus · Accepted Answer

In pacemaker cells, calcium ions (Ca2+) are primarily responsible for depolarization. In other cardiac cells, sodium ions (Na+) are the main ions responsible for this process.

The Ion Primarily Responsible for Depolarization in Pacemaker Cells Is