Bundle of His

Definition

The Bundle of His is a collection of heart muscle cells specialized for electrical conduction that transmits the electrical impulses from the AV node to the point of the apex in the heart's ventricles. This key structure ensures the coordinated contraction of the ventricles, essential for maintaining a rhythmic and efficient heartbeat.

Related terms

Sinoatrial (SA) Node: The natural pacemaker of the heart, initiating the heartbeat and setting its rhythm.

Atrioventricular (AV) Node: A cluster of cells situated between the atria and ventricles that delay and relay electrical impulses to the Bundle of His.

Purkinje Fibers: Specialized conductive fibers in the walls of the heart's ventricles that spread out from the Bundle of His to coordinate contractions of ventricular muscle tissue