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Atrioventricular nodal branch

FieldValue
NameAtrioventricular nodal branch
Latinramus nodi atrioventricularis
ImageGray492.png
CaptionSternocostal surface of heart.
Image2Cardiac vessels.png
Caption2ARTERIES:
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

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 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:

  • proximal posterolateral branch from the right coronary artery in around 77%.
  • distal posterolateral branch from the right coronary artery in around 2%.
  • distal right coronary artery in around 10%.
  • right posterior interventricular artery in around 7%.
  • distal circumflex branch of left coronary artery in around 4%.

The right coronary artery supplies the atrioventricular node in around 90% of people.

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

Function

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

References

References

  1. (2018-10-15). "Clarifying the anatomy of the atrioventricular node artery". International Journal of Cardiology.
  2. Mahadevan, Vishy. (2012-01-01). "Anatomy of the heart". Surgery (Oxford).
  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
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

arteries-of-the-thorax
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