atrioventricular node

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Related to Atrioventricular nodes: atrioventricular bundle

atrioventricular node

n.
A small mass of specialized cardiac muscle fibers, located in the wall of the right atrium of the heart, that receives electrical impulses from the sinoatrial node and directs them to the conduction system in the walls of the ventricles. Also called A-V node.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

a′trioventric′ular node`


n.
a small mass of conducting muscle fibers in the heart, at the base of the right atrium, that transmits heartbeat impulses to the ventricles.
[1930–35]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.atrioventricular node - a node of specialized heart muscle located in the septal wall of the right atriumatrioventricular node - a 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
cardiac muscle, heart muscle - the muscle tissue of the heart; adapted to continued rhythmic contraction
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
These findings led to the hypothesis that this side effect of ticagrelor was mediated with adenosine which might slow down the conduction of atrioventricular nodes.
Arterial supply to sinuatrial and atrioventricular nodes: imaging with multidetector CT.
The efferent signals are then mediated by right and left vagus nerves which innervate sinoatrial and atrioventricular nodes, respectively.

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