bundle of His(redirected from Atrioventricular bundle of His)
Also found in: Dictionary, Thesaurus, Encyclopedia.
a collection of fibers or strands, as of muscle fibers or nerve fibers. See also tract and fasciculus.
atrioventricular bundle bundle of His.
fundamental bundle (ground bundle) that part of the white matter of the spinal cord bordering the gray matter and containing fibers that travel for a distance of only a few segments of the cord.
bundle of His a band of cardiac muscle fibers connecting the atria with the ventricles of the heart; called also atrioventricular bundle.
medial forebrain bundle a group of nerve fibers connecting the midbrain tegmentum and elements of the limbic system.
Thorel's bundle a bundle of muscle fibers in the human heart connecting the sinoatrial and atrioventricular nodes.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
the bundle of modified cardiac muscle fibers that begins at the atrioventricular node as the trunk of the atrioventricular bundle and passes through the right atrioventricular fibrous ring to the membranous part of the interventricular septum where the trunk divides into two branches, the right bundle [TA] (crus dextrum [TA]) of the atrioventricular bundle and the left bundle [TA] (crus sinistrum [TA]) of the atrioventricular bundle; the two crura ramify in the subendocardium of their respective ventricles.
Synonym(s): fasciculus atrioventricularis [TA], atrioventricular band, Gaskell bridge, His band, His bundle, bundle of His, Keith bundle, Kent bundle (1) , Kent-His bundle, truncus fascicularis atrioventricularis, trunk of atrioventricular bundle, ventriculonector
Farlex Partner Medical Dictionary © Farlex 2012
bundle of His(hĭs)
The bundle of cardiac muscle fibers that conducts the electrical impulses that regulate the heartbeat, from the atrioventricular node in the right atrium to the septum between the ventricles and then to the left and right ventricles. Also called atrioventricular bundle.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
bundle of HisA bundle of specialised cardiac muscle fibres which carries the electric impulses for the co-ordinated contraction of the heart. The bundle begins at the AV node located at the inferior interatrial septum, and passes into the subendocardium through the right fibrous trigone to the interventricular septum, after which it divides into right and left limbs that pass along either side of the septum, branching to the walls of the ventricles.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
bundle of HisThe short bundle of specialized heart muscle fibres that conducts electrical impulses from the ATRIOVENTRICULAR NODE to the conducting bundle that splits at the top of the interventricular septum. Also known as the atrioventricular bundle. (Wilhelm His, 1831–1904, German professor of medicine).
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
bundle of Hisor
atrioventricular bundlea group of specialized muscle fibres in the mammalian heart carrying electrical signals from the ATRIOVENTRICULAR NODE down the septum between the ventricles and eventually dividing up into Purkinje fibres. See HEART and Fig. 189 .
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005