The part of the conduction system that is located on the floor of the right atrium is the:
A) Purkinje network.
B) SA node.
C) AV node.
D) bundle of His.

Question

Quizplus · Accepted Answer

The AV node is the part of the conduction system that is located on the floor of the right atrium. It is responsible for delaying the electrical impulse from the SA node and then conducting it to the ventricles through the bundle of His. The Purkinje network is located in the ventricles and is responsible for rapidly conducting the electrical impulses throughout the ventricular myocardium. The SA node is located in the superior aspect of the right atrium and is responsible for initiating the electrical impulses that lead to contraction of the atria. Therefore, the correct answer is C, AV node. Choice A, Purkinje network, and choice B, SA node, are incorrect.

The Part of the Conduction System That Is Located on the Floor