The "pacemaker" of the heart is the
A) right bundle branch.
B) left bundle branch.
C) AV node.
D) SA node.
E) PM node.

Name: The "pacemaker" of the heart is the A) right bundle branch. B) left bundle branch. C) AV node. D) SA node. E) PM node.
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Question

Quizplus · Accepted Answer

The SA (sinoatrial) node is known as the pacemaker of the heart because it generates the electrical impulses that initiate the heartbeat, setting the rhythm for the rest of the heart.

The "Pacemaker" of the Heart Is the