Atrioventricular bundle
Atrioventricular Bundle (pronunciation: AY-tree-oh-ven-TRIK-yoo-ler BUN-dl), also known as the Bundle of His after the Swiss cardiologist Wilhelm His Jr. who discovered it, is a key component of the electrical conduction system of the heart.
Etymology
The term "Atrioventricular" is derived from the Latin words "atrium" and "ventriculus" which mean "entrance hall" and "little belly" respectively. This refers to the location of the bundle, which is in the heart, connecting the atria (entrance halls) and the ventricles (little bellies). The term "bundle" is derived from the Latin "bundula" meaning "to bind", referring to the bundle of specialized heart muscle cells that this structure is composed of.
Function
The Atrioventricular Bundle plays a crucial role in the cardiac cycle. It transmits electrical impulses from the AV node to the Purkinje fibers, facilitating the coordinated contraction of the heart muscles. This ensures the efficient pumping of blood from the heart to the rest of the body.
Related Terms
- Cardiac cycle: The sequence of events that occur when the heart beats.
- Atrioventricular node: A part of the electrical conduction system of the heart that delays the electrical impulse before it is passed to the ventricles.
- Purkinje Fibers: Specialized muscle fibers that spread the electrical impulse to the ventricular muscles, causing them to contract and pump blood.
See Also
External links
- Medical encyclopedia article on Atrioventricular bundle
- Wikipedia's article - Atrioventricular bundle
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