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.)
-has the fastest rate of pacemaker activity
A)SA node
B)AV node
C)bundle of His and Purkinje system
D)gap junction

Question

Quizplus · Accepted Answer

The SA node has the fastest rate of pacemaker activity, setting the pace for the heart rate because it generates impulses more frequently than other parts of the heart's conduction system.

Match the Factor Involved in the Initiation and Spread of Cardiac