The ________ is called the pacemaker of the heart.
A) sinoatrial node
B) bundle of His
C) atrioventricular node
D) bicuspid

Question

Quizplus · Accepted Answer

The sinoatrial node, located in the right atrium of the heart, is known as the pacemaker of the heart because it initiates the electrical impulses that regulate the rhythm of the heartbeat. The other options listed, including the bundle of His, atrioventricular node, and bicuspid, are all important parts of the heart's electrical system but do not have the same pacemaker function as the sinoatrial node.

The ________ Is Called the Pacemaker of the Heart