Which part of the heart is responsible for coordinating the contraction of the ventricles?

The Bundle of His is a crucial component in the heart's conduction system that is responsible for coordinating the contraction of the ventricles. Located in the interventricular septum, it serves as the pathway for electrical impulses to travel from the atrioventricular (AV) node to the Purkinje fibers, which directly stimulate ventricular contraction. This coordination is vital for maintaining effective and synchronized heartbeats.

The Bundle of His carries the impulses from the AV node to the right and left bundle branches, which further distribute the electrical signal to the Purkinje network, ensuring that the ventricles contract in unison after the atria have contracted. This mechanism is essential for efficient blood pumping from the ventricles to the lungs and the rest of the body.

Understanding the role of the Bundle of His provides insight into how electrical signaling in the heart results in organized mechanical contractions, which is fundamental to cardiovascular function.