A nurse is teaching staff about the conduction of the heart. In which order will the nurse present the conduction cycle, starting with the first structure
1) Bundle of His
2) Purkinje network
3) Intraatrial pathways
4) Sinoatrial (SA) node
5) Atrioventricular (AV) node

Question

Quizplus · Accepted Answer

The conduction system originates with the SA node, the "pacemaker" of the heart. The electrical impulses are transmitted through the atria along intraatrial pathways to the AV node. It assists atrial emptying by delaying the impulse before transmitting it through the Bundle of His and the ventricular Purkinje network.

A Nurse Is Teaching Staff About the Conduction of the Heart