bundle of His


bundle of His
bundle of His -'his n a slender bundle of modified cardiac muscle that passes from the atrioventricular node in the right atrium to the right and left ventricles by way of the septum and that maintains the normal sequence of the heartbeat by conducting the wave of excitation from the right atrium to the ventricles called also atrioventricular bundle, His bundle
His Wilhelm (1863-1934)
German physician. A pioneer cardiologist, His was one of the first to recognize that the heartbeat originates in nodes of modified heart muscle. In 1893 he described the atrioventricular bundle, which is now often known as the bundle of His. He is also remembered for his description of trench fever in 1916, when it was a major medical problem.

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a small band of atypical cardiac muscle fibers that originates in the atrioventricular node in the interatrial septum, passes through the atrioventricular junction, and then runs beneath the endocardium of the right ventricle on the membranous part of the interventricular septum. It divides at the upper end of the muscular part of the interventricular septum into right and left bundle branches which descend in the septal wall of the right and left ventricle, respectively, to be distributed to those two chambers. This bundle propagates the atrial contraction rhythm to the ventricles, and its interruption produces heart block. The term is often used to refer specifically to the trunk of the bundle (truncus fasciculi atrioventricularis) rather than the entire bundle. Called also fasciculus atrioventricularis [TA], atrioventricular b., AV b., and Kent-His b. See illustration at nodus sinuatrialis.

Medical dictionary. 2011.

Look at other dictionaries:

  • Bundle of His — Infobox Anatomy Name = Bundle of His Latin = fasciculus atrioventricularis GraySubject = GrayPage = Caption = Bundle of His is near ventricular septum. Caption2 = Heart cut away showing Bundle of HisSchematic representation of the… …   Wikipedia

  • bundle of His — noun a bundle of modified heart muscle that transmits the cardiac impulse from the atrioventricular node to the ventricles causing them to contract • Syn: ↑atrioventricular bundle, ↑atrioventricular trunk, ↑truncus atrioventricularis • Hypernyms …   Useful english dictionary

  • bundle of His — see atrioventricular bundle W. His (1863 1934), Swiss anatomist …   Medical dictionary

  • bundle of His — /his/, Anat. See atrioventricular bundle. [after Wilhelm His (1863 1934), Swiss physician] * * * …   Universalium

  • bundle of His — bun′dle of His′ [[t]hɪs[/t]] n. anat. atrioventricular bundle • Etymology: after Wilhelm His (1863–1934), Swiss physician …   From formal English to slang

  • bundle of His — noun Specialized heart muscle cells that transmit electrical impulses from the AV node in the heart to the muscle cells of the heart wall, which contract in response producing the heart beat. Syn: AV bundle, atrioventricular bundle …   Wiktionary

  • bundle of His — atrioventricular bundle …   The new mediacal dictionary

  • Пучок Гиса (Bundle Of His) — см. Пучок, предсердно желудочковый.ПУЧОК ПРЕДСЕРДНО ЖЕЛУДОЧКОВЫЙ (atrioventricular bundle, A V bundle), ПУЧОК ГИСА (bundle of His) пучок клеток сердечной проводящей системы, идущих от атриовентрикулярного узла через предсердно желудочковую… …   Медицинские термины

  • trunk of bundle of His — truncus fasciculi atrioventricularis …   Medical dictionary

  • Bundle — may refer to:In mathematics: * Fiber bundle, in particular in topology, a space that looks locally like a product space *Bundle (mathematics), a generalization of a fiber bundle dropping the condition of a local product structureIn medicine: *… …   Wikipedia


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