His, Wilhelm Jr.
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His, Wilhelm Jr.(his)
German physician, 1863–1934.
bundle of His
The atrioventricular (AV) bundle, a group of modified muscle fibers, the Purkinje fibers, forming a part of the impulse-conducting system of the heart. It arises in the AV node and continues in the interventricular septum as a single bundle, the crus commune, which divides into two trunks that pass respectively to the right and left ventricles, fine branches passing to all parts of the ventricles. It conducts impulses from the atria to the ventricles, which initiates ventricular contraction.