- nouna node of specialized heart muscle located in the septal wall of the right atrium; receives impulses from the sinoatrial node and transmits them to atrioventricular bundle
* * *noun: a small mass of tissue lying in the wall of the right auricle adjacent to the septum between the auricles, being structurally and functionally related to the sinoatrial node, passing impulses received from the latter by way of the atrioventricular bundles, and in certain pathological states replacing the sinoatrial node as pacemaker of the heart
* * *Anat.a small mass of muscular fibers at the base of the wall between the atria, conducting impulses received from the sinoatrial node by way of the atrioventricular bundles and, under certain conditions, functioning for the sinoatrial node as pacemaker of the heart. Abbr.: A-V node.[1930-35]
* * *atrioventricular node,a small mass of tissue in the right auricle of the heart, which receives the heartbeat impulses from the sinoatrial or sinus node and conducts them by way of the atrioventricular bundle; A-V node. It sometimes replaces the sinoatrial node as the heart's pacemaker.
Useful english dictionary. 2012.
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Atrioventricular node — The atrioventricular (AV) node is an electrical relay station between the atria (the upper) and the ventricles (the lower chambers of the heart). Electrical signals from the atria must pass through the AV node to reach the ventricles. The AV node … Medical dictionary
Atrioventricular node — Infobox Anatomy Name = PAGENAME Latin = nodus atrioventricularis GraySubject = GrayPage = Caption = AV node visible near bend of red line. Caption2 = Heart; conduction system Precursor = System = Artery = atrioventricular nodal branch Vein =… … Wikipedia
atrioventricular node — Anat. a small mass of muscular fibers at the base of the wall between the atria, conducting impulses received from the sinoatrial node by way of the atrioventricular bundles and, under certain conditions, functioning for the sinoatrial node as… … Universalium
atrioventricular node — AV node a mass of modified heart muscle situated in the lower middle part of the right atrium. It receives the impulse to contract from the sinoatrial node, via the atria, and transmits it through the atrioventricular bundle to the ventricles … The new mediacal dictionary
atrioventricular node — noun Date: circa 1934 a small mass of tissue in the right atrioventricular region of higher vertebrates through which impulses from the sinoatrial node are passed to the ventricles … New Collegiate Dictionary
atrioventricular node — a′trioventric′ular node n. anat. a small mass of conducting muscle fibers in the heart, at the base of the right atrium, that transmits heartbeat impulses to the ventricles • Etymology: 1930–35 … From formal English to slang
atrioventricular node — /ætrioʊvɛnˌtrɪkjələ ˈnoʊd/ (say atreeohven.trikyuhluh nohd) noun a mass of specialised conductive tissue in the heart, which transmits electrical impulses to initiate contraction; A V node … Australian English dictionary
Узел Атриовентрикулярный (Atrioventricular Node) — часть проводящей системы сердца; расположен в межпредсердной перегородке. Импульс поступает в него от синусно предсердного узла по кардиомиоцитам предсердий, а затем передается через предсердножелудочковый пучок миокарду желудочков. Источник:… … Медицинские термины
Atrioventricular — (having to do with an atrium and ventricle) can refer to: *Left atrioventricular opening *Atrioventricular fistula *Atrioventricular node *The term Atrioventricular valves is used to describe the mitral valve and tricuspid valve … Wikipedia
atrioventricular bundle — n BUNDLE OF HIS * * * (AV bundle, bundle of His) a bundle of modified heart muscle fibres (Purkinje fibres) passing from the atrioventricular node forward to the septum between the ventricles, where it divides into right and left bundles, one for … Medical dictionary