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Atrioventricular nodal branch
Blood vessel From Wikipedia, the free encyclopedia
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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.
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Structure
Origin
The atrioventricular nodal branch sees significant variation in origin:
- proximal posterolateral branch from the right coronary artery in around 77%.[1]
- distal posterolateral branch from the right coronary artery in around 2%.[1]
- distal right coronary artery in around 10%.[1]
- right posterior interventricular artery in around 7%.[1]
- distal circumflex branch of left coronary artery in around 4%.[1]
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]
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Function
The atrioventricular nodal branch supplies the atrioventricular node, allowing for excitation of the ventricles.[1]
See also
References
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