atrioventricular node

(redirected from Atrioventricular nodes)
Also found in: Thesaurus, Medical, Encyclopedia.
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.

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]
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
References in periodicals archive ?
the effect of epinephrine and norepinephrine released from sympathetic nerve fibres, acting on the sino-atrial and atrioventricular nodes, which increase the rate of cardiac contraction and facilitate conduction at the atrioventricular node and parasympathetic mediators of HR i.
Serious dysrhythmias may occur if amiodarone is used with Class I antiarrhythmic drugs and the suppressive effect of beta-blockers and calcium antagonists on the sinus and atrioventricular nodes may be enhanced[10].

Full browser ?