| Atrioventricular nodal branch | |
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Sternocostal surface of heart.
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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 A12.2.03.213 |
| 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.
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]
The atrioventricular nodal branch supplies the atrioventricular node, allowing for excitation of the ventricles.[1]
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| Lungs |
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| Heart |
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| Aorta |
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