The His bundle is a part of the heart's electrical conduction system that helps transmit impulses from the atria to the ventricles. It is also known as the atrioventricular bundle or AV bundle. Other synonyms for the His bundle include the bundle of His, the AV node bundle, the common bundle, and the nodal bundle. It is essential for proper heart function, and any issues with this pathway can lead to heart rhythm disorders. The His bundle is named after the Swiss cardiologist Wilhelm His, Jr., who discovered and described the bundle's anatomy in the late 19th century.