The parts of the cardiac conduction pathway that bring about contraction of the ventricles are the:
A)AV node, Purkinje fibers, and bundle branches
B)bundle of His, SA node, and AV node
C)AV node, bundle branches, and SA node
D)bundle of His, bundle branches, and Purkinje fibers

Question

Quizplus · Accepted Answer

The bundle of His, bundle branches, and Purkinje fibers are responsible for bringing about contraction of the ventricles. The SA node and AV node are involved in the initiation and regulation of the cardiac cycle, but do not directly affect ventricular contraction.

The Parts of the Cardiac Conduction Pathway That Bring About