Place the Following Parts of the Cardiac Conduction System in the Order

Multiple Choice

Place the following parts of the cardiac conduction system in the order in which they transmit the action potential.
1) atrioventricular (AV) bundle
2) Purkinje fibers
3) sinoatrial (SA) node
4) right and left bundle branches
5) contractile cells of cardiac muscle tissue
6) atrioventricular (AV) node

A) 3,6,1,4,2,5
B) 3,1,6,4,5,2
C) 3,6,4,1,2,5
D) 3,1,6,4,2,5