Anatomy

Atrioventricular Node

A small nodular mass of specialized muscle fibers located in the interatrial septum near the opening of the coronary sinus. It gives rise to the atrioventricular bundle of the conduction system of the heart.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A small nodular mass of specialized muscle fibers located in the interatrial septum near the opening of the coronary sinus. It gives rise to the atrioventricular bundle of the conduction system of the heart.

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

Synonyms

17 entry terms
  • A-V Node
  • AV Node
  • Atrio-Ventricular Node
  • A V Node
  • A-V Nodes
  • AV Nodes
  • Atrio Ventricular Node
  • Atrio-Ventricular Nodes
  • Atrioventricular Nodes
  • Node, A-V
  • Node, AV
  • Node, Atrio-Ventricular
  • Node, Atrioventricular
  • Nodes, A-V
  • Nodes, AV
  • Nodes, Atrio-Ventricular
  • Nodes, Atrioventricular

MeSH Record

Aspects Covered

23 allowable subheadings

Indexed with the subheadings abnormalities, anatomy & histology, chemistry, cytology, diagnostic imaging, drug effects, embryology, enzymology, growth & development, immunology, injuries, innervation, metabolism, microbiology, parasitology, pathology, physiology, physiopathology, radiation effects, surgery, transplantation, ultrastructure, virology.

MeSH Record

History Note

91(75); was see under HEART CONDUCTION SYSTEM 1975-90

MeSH Hierarchy

Tree Number

  1. A07w.541w.409w.147w

AMA Style

References

  1. National Library of Medicine. Atrioventricular Node. Medical Subject Headings (MeSH). 2026. Unique ID D001283. http://id.nlm.nih.gov/mesh/2026/D001283
  2. Atrioventricular Node. In: Wikipedia. https://en.wikipedia.org/wiki/Atrioventricular_node
  3. Atrioventricular Node. In: Wikidata. https://www.wikidata.org/wiki/Q509053