What node serves as the pacemaker of the heart?

Answer 1

The SA node acts as the primary pacemaker for the heart. It is located in the right atrium.

Answer 2

Most often it is known to stimulate the contraction of the ventricles.

There are two basic types of pacemakers.

• Single-chamber pacemakers stimulate one chamber of the heart, either an atrium or more often a ventricle.
• Dual-chamber pacemakers send electrical impulses to both the atrium and the ventricle and pace both chambers. A dual-chamber pacemaker synchronizes the rhythm of the atria and ventricles in a pattern that closely resembles the natural heartbeat.

Dual-chamber pacemakers are usually used to treat a slow heart rate.

Answer 3

Sinoatrial Node (E, K:39)

Answer 4

The S.A node serves as the "pacemaker"

Answer 5

AV node