Atrioventricular nodal branch

Last updated
Atrioventricular nodal branch
Gray492.png
Sternocostal surface of heart.
Cardiac vessels.png
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
Latin ramus nodi atrioventricularis
TA98 A12.2.03.110
TA2 4140
FMA 3851
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.

Contents

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. 1 2 3 4 5 6 7 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