atrioventricular node

(redirected from nodal tissue)
Also found in: Thesaurus, Medical, Encyclopedia.

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 ?
AFB were microscopically positive in 54 (56%) nodal tissue biopsy sections and forty three (44%) cases were negative.
3,4) Cervical Lymphadenopathy is defined as cervical lymph nodal tissue measuring more than 1 cm.
Extended LND (eLND) included a farther dissection proximally to include nodal tissue to the bifurcation of the aorta and laterally to the genitofemoral nerve.
In 1 patient normal nodal tissue was completely replaced by cancer and, therefore, there was no tracer uptake in the involved pelvic sidewall/node, and the other patient had no tracer activity at all in the involved pelvic sidewall.