Atrioventricular Node (also known as Atrioventricular Nodes, Node, Atrioventricular): 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.

NIH MeSH · D001283Anatomy

Atrioventricular Node

Also known asAtrioventricular Nodes · Node, Atrioventricular · Nodes, Atrioventricular · A-V Node · A V Node · A-V Nodes · Node, A-V · Nodes, A-V · Atrio-Ventricular Node · Atrio Ventricular Node · Atrio-Ventricular Nodes · Node, Atrio-Ventricular

Definition

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 classification

  • A07.541.409.147

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Common questions about Atrioventricular Node

What does Atrioventricular Node mean in medicine?
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. This definition is taken from the National Library of Medicine's MeSH (Medical Subject Headings) 2026 release, which is the standard vocabulary used to index PubMed and most medical literature.
Is Atrioventricular Node known by any other names?
Yes. Atrioventricular Node is also referred to as Atrioventricular Nodes, Node, Atrioventricular, Nodes, Atrioventricular, A-V Node in different clinical, research and patient-facing contexts. The MeSH descriptor groups all of these synonyms under a single canonical concept so research and records stay consistent.
Where does Atrioventricular Node sit in the medical classification?
Atrioventricular Node falls under the broader medical category "Anatomy" in the MeSH hierarchy (tree numbers: A07.541.409.147). Browsing the related concepts on this page takes you to neighbouring topics in the same branch of medicine.
Where can I get a plain-language explanation of Atrioventricular Node?
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Source: NIH MeSH 2026 (D001283) — National Library of Medicine, public domain. View official MeSH record ↗