The Cardiac Care Nurse Is Reviewing the Conduction System of the Heart

The cardiac care nurse is reviewing the conduction system of the heart. The nurse is aware that electrical conduction of the heart usually originates in the SA node and then proceeds in what sequence?

A) SA node to bundle of His to AV node to Purkinje fibers
B) SA node to AV node to Purkinje fibers to bundle of His
C) SA node to bundle of His to Purkinje fibers to AV node
D) SA node to AV node to bundle of His to Purkinje fibers