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Sinoatrial Node MeSH Descriptor Data 2022


MeSH Heading
Sinoatrial Node
Tree Number(s)
A07.541.409.819
Unique ID
D012849
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D012849
Scope Note
The small mass of modified cardiac muscle fibers located at the junction of the superior vena cava (VENA CAVA, SUPERIOR) and right atrium. Contraction impulses probably start in this node, spread over the atrium (HEART ATRIUM) and are then transmitted by the atrioventricular bundle (BUNDLE OF HIS) to the ventricle (HEART VENTRICLE).
Entry Term(s)
Sino-Atrial Node
Sinu-Atrial Node
Sinuatrial Node
Sinus Node
Public MeSH Note
78; was SINO-ATRIAL NODE 1970-77
Online Note
use SINOATRIAL NODE to search SINO-ATRIAL NODE 1966-77 (as Prov 1966-69)
History Note
78; was SINO-ATRIAL NODE 1964-77 (Prov 1964-69)
Date Established
1970/01/01
Date of Entry
1999/01/01
Revision Date
2005/06/30
Sinoatrial Node Preferred
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