The normal pacemaker of the heart is the
A)Purkinje fibers.
B)AV bundle.
C)sinoatrial node.
D)atrioventricular node.

Question

Quizplus · Accepted Answer

The sinoatrial (SA) node is considered the normal pacemaker of the heart. It is located in the right atrium and generates electrical signals that initiate each heartbeat. The signals then travel through the atrioventricular (AV) node, AV bundle, and Purkinje fibers to stimulate contraction of the heart muscles. While the other options (AV bundle, Purkinje fibers, and AV node) also play a role in the conduction of electrical signals in the heart, they are not considered the main pacemaker.

The Normal Pacemaker of the Heart Is the