Which structure is responsible for setting the heart rate?
A)atrioventricular node
B)intercalated disk
C)sinoatrial node
D)pericardium
E)septum

Question

Quizplus · Accepted Answer

The sinoatrial node (SA node) is responsible for setting the heart rate by initiating each heartbeat. It is located in the upper part of the right atrium and is the natural pacemaker of the heart. The atrioventricular node (AV node) is responsible for conducting the electrical impulses from the SA node to the ventricles, but it does not set the heart rate. The intercalated disk, pericardium, and septum are all important structures in the heart but they do not play a direct role in setting the heart rate.

Which Structure Is Responsible for Setting the Heart Rate