In the heart's conduction system, the _____ receive(s) an electrical impulse from the bundle of His and relay(s) it to the Purkinje fibers in the ventricular myocardium.
A) atrioventricular (AV) node
B) atria
C) sinoatrial (SA) node
D) right and left bundle branches

Question

Quizplus · Accepted Answer

The right and left bundle branches divide into smaller and smaller branches and then into a special network of fibers called the Purkinje fibers. These fibers spread from the interventricular septum into the papillary muscles. They continue downward to the apex of the heart, composing an elaborate web that penetrates about one third of the way into the ventricular muscle mass. The fibers then become continuous with the muscle cells of the right and left ventricles.

In the Heart's Conduction System, the _____ Receive(s) an Electrical