The sinus node (sinoatrial node) plays a significant role in the heart's conducting system or contraction in specific. It is located in the right atrial wall, and the autonomic nervous system regulates its function. SA node is a natural pacemaker, and it generates and conducts electrical impulses for the heart's function. Its dysfunction leads to palpitations, fatigue upon exertion, weakness, and syncope. Artificial pacemakers come to the rescue in such conditions.
The Difference Between SA Node and AV Node
The bundle of HIS, bundle branches, Purkinje fibers, AV node, SA node, and bundle of HIS are the key components of the cardiac conduction system.
