Atrioventricular nodal branch
Sternocostal surface of heart.
ARTERIES:
RCA = right coronary
AB = atrial branches
SANB = sinuatrial nodal
RMA = right marginal
LCA = left coronary
CB = circumflex branch
LAD/AIB = anterior interventricular
LMA = left marginal
PIA/PDA = posterior descending
AVN = atrioventricular nodal

VEINS:
SCV = small cardiac
ACV = anterior cardiac
AIV/GCV = great cardiac
MCV = middle cardiac
CS = coronary sinus
Details
Identifiers
LatinRamus nodi atrioventricularis
TA98A12.2.03.110
A12.2.03.213
TA24140
FMA3851
Anatomical terminology

The atrioventricular nodal branch is a coronary artery that supplies arterial blood to the atrioventricular node, which is responsible for initiating muscular contraction of the ventricles. The AV nodal branch is most often a branch of the right coronary artery.

Structure

Origin

The atrioventricular nodal branch sees significant variation in origin:

The right coronary artery supplies the atrioventricular node in around 90% of people.[1][2]

In approximately 2% of people, the vascular supply to the atrioventricular node arises from both the right coronary artery and the left circumflex branch.[3]

Function

The atrioventricular nodal branch supplies the atrioventricular node, allowing for excitation of the ventricles.[1]

See also

References

  1. ^ a b c d e f g Kawashima, Tomokazu; Sato, Fumi (2018-10-15). "Clarifying the anatomy of the atrioventricular node artery". International Journal of Cardiology. 269: 158–164. doi:10.1016/j.ijcard.2018.07.022. ISSN 0167-5273. PMID 30001947. S2CID 51618750.
  2. ^ Mahadevan, Vishy (2012-01-01). "Anatomy of the heart". Surgery (Oxford). Cardiothoracic I. 30 (1): 5–8. doi:10.1016/j.mpsur.2011.10.011. ISSN 0263-9319.
  3. ^ Sow ML, Ndoye JM, Lo EA. The artery of the atrioventricular node: an anatomic study based on 38 injection-dissections. Surg Radiol Anat 1996;18:183–187
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