Which of the following serves as the pacemaker in a normal heart?
A)AV node
B)Bundle of His
C)SA node
D)Bundle branches

Question

Quizplus · Accepted Answer

The SA (sinoatrial) node is the natural pacemaker of the heart, meaning it initiates the electrical impulses that cause each heartbeat. The AV (atrioventricular) node and Bundle of His help transmit these impulses to the ventricles, but they do not serve as the primary pacemaker. The bundle branches further divide and distribute the impulses to the muscle fibers of the ventricles.

Which of the Following Serves as the Pacemaker in a Normal