atrioventricular bundle

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bundle

 [bun´d'l]
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.
Bundle of His considered as the trunk of the bundle and excluding the bundle branches. From Dorland's, 2000.
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.

a·tri·o·ven·tric·u·lar bun·dle

[TA]
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.

atrioventricular bundle

bundle of His

A 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.

atrioventricular bundle

Bundle of His, AV bundle Anatomy A group of specialized cardiac fibers that conduct impulses from the AV node to the ventricle

bundle of His

or

atrioventricular bundle

a 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 .

Gaskell,

Walter H., English physiologist, 1847-1914.
Gaskell bridge - a bundle of modified cardiac muscle fibers. Synonym(s): atrioventricular bundle
Gaskell clamp - an instrument for crushing the atrioventricular bundle in experimental animals and thus producing heart block.

Keith,

Sir Arthur, Scottish anatomist, 1866-1955.
Keith bundle - modified cardiac muscle fibers. Synonym(s): atrioventricular bundle
Keith and Flack node - the mass of specialized cardiac muscle fibers that normally acts as the pacemaker of the cardiac conduction system. Synonym(s): Flack node; Keith node; sinuatrial node
Keith node - Synonym(s): Keith and Flack node

His,

Wilhelm, Jr., German physician, 1863-1934.
His band - Synonym(s): His bundle
His bundle - modified cardiac muscle fibers. Synonym(s): atrioventricular bundle; His band; Kent bundle; Kent-His bundle
His bundle electrogram - an electrogram recorded from the His bundle.
His bundle heart block
His bundle recording
His spindle - a fusiform dilation of the aorta immediately beyond the isthmus. Synonym(s): aortic spindle
His-Tawara system - the complex system of interlacing Purkinje fibers within the ventricular myocardium.
Kent-His bundle - Synonym(s): His bundle

His,

Wilhelm, Sr., Swiss anatomist and embryologist in Germany, 1831-1904.
duct of His - Synonym(s): Bochdalek duct
His copula - a median elevation in the floor of the embryonic pharynx that is incorporated in the root of the tongue. Synonym(s): hypobranchial eminence
His line - a line dividing the face into an upper and a lower, or dental part.
His perivascular space - Synonym(s): Virchow-Robin space
His rule - an obsolete calculation for the duration of pregnancy.
isthmus of His - the anterior portion of the rhombencephalon connecting with the mesencephalon. Synonym(s): rhombencephalic isthmus
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