The pacemaker resting potential is _______ negative than those of other cardiac muscle cells because the _______ channels of pacemaker cells are more open. A) less; Na⁺ B) more; K⁺ C) less; Ca²⁺ D) more; Na⁺ E) less; K⁺

Question

Quizplus · Accepted Answer

The pacemaker resting potential is less negative than those of other cardiac muscle cells because the Na+ (sodium) channels of pacemaker cells are more open, allowing more positive ions into the cell, making the inside less negative compared to other cardiac cells.

The Pacemaker Resting Potential Is _______ Negative Than Those of Other