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 only point of electrical contact between the atria and ventricles
A)SA node
B)AV node
C)bundle of His and Purkinje system
D)gap junction

Question

Quizplus · Accepted Answer

The AV node is the only point of electrical contact between the atria and ventricles, as it is the only structure that physically connects the two chambers. The SA node initiates the electrical activity, the bundle of His and Purkinje system rapidly transmits the electrical impulse to the ventricles, and gap junctions allow for the spread of electrical activity between adjacent cardiac cells.

Match the Factor Involved in the Initiation and Spread of Cardiac