Question

12 what is the normal pacemaker of the heart? multiple choice purkinje fibers sinoatrial node av bundle atrioventricular node

Explanation:

The sinoatrial (SA) node is known as the natural or normal pacemaker of the heart. It generates electrical impulses that initiate the heartbeat and regulate the heart - rate. The Purkinje fibers, AV bundle, and atrioventricular node are also part of the heart's conduction system but do not serve as the normal pacemaker.

Answer:

B. Sinoatrial node