Which of the following would not cause an ectopic beat?
A) Bundle of His
B) Purkinje fibers
C) SA node
D) AV node

Question

Quizplus · Accepted Answer

Ectopic beats are abnormal heartbeats that originate from a location within the heart other than the SA node, such as the ventricles, atria, or AV node. The SA node is the normal pacemaker of the heart and any disturbance in its rhythm may cause arrhythmias, but it does not cause ectopic beats. The bundle of His and Purkinje fibers can also cause ectopic beats if they develop abnormal electrical activity. The AV node can also trigger ectopic beats under certain circumstances.

Which of the Following Would Not Cause an Ectopic Beat