Match the factor involved in the initiation and spread of cardiac excitation, labelled a. through d. with the description. (Options may be used more than once or not at all.)
-the normal pacemaker of the heart
A)SA node
B)AV node
C)bundle of His and Purkinje system
D)gap junction

Question

Quizplus · Accepted Answer

The SA node, or sinoatrial node, is recognized as the normal pacemaker of the heart because it initiates the electrical impulses that set the pace for cardiac activity.

Match the Factor Involved in the Initiation and Spread of Cardiac