One of the functions of the atrioventricular (AV)node is to
A) pace the heart if the ventricles fail.
B) slow the impulse arriving from the SA node.
C) send the impulse to the SA node.
D) allow for ventricular filling during systole.

Question

Quizplus · Accepted Answer

The impulse from the SA node quickly reaches the atrioventricular (AV)node located in the area called the AV junction,between the atria and the ventricles.Here the impulse is slowed to allow time for ventricular filling during relaxation or ventricular diastole.The AV node has pacemaker properties and can discharge an impulse if the SA node (not the ventricle)fails.The electrical impulse is then rapidly conducted through the bundle of His to the ventricles (not the SA node)via the left and right bundle branches.

One of the Functions of the Atrioventricular (AV)node Is to