Use the following answer code to indicate which factor involved in the initiation and spread of cardiac excitation is being identified.
-Is the normal pacemaker of the heart.
A)SA node
B)AV node
C)Bundle of His and Purkinje system
D)Gap junctions

Question

Quizplus · Accepted Answer

The SA node is the normal pacemaker of the heart, responsible for initiating cardiac excitation. The AV node delays the signal, the Bundle of His and Purkinje system are involved in rapidly spreading the signal to the ventricles, and gap junctions allow for the transmission of the electrical signal between cardiac cells.

Use the Following Answer Code to Indicate Which Factor Involved