In sequential order, the components of the intrinsic conduction system, beginning at the SA node, are .
A) AV node, AV bundle, bundle branches, subendocardial conducting network (Purkinje fibers)
B) bundle branches, AV node, AV bundle, subendocardial conducting network (Purkinje fibers)
C) subendocardial conducting network (Purkinje fibers), bundle branches, AV bundle, AV node
D) AV bundle, AV node, subendocardial conducting network (Purkinje fibers), bundle branches

Question

Quizplus · Accepted Answer

The intrinsic conduction system of the heart starts with the sinoatrial (SA) node, then proceeds to the atrioventricular (AV) node, followed by the AV bundle (bundle of His), then to the bundle branches, and finally to the subendocardial conducting network (Purkinje fibers). This sequence ensures the coordinated contraction of the heart chambers.

In Sequential Order, the Components of the Intrinsic Conduction System