©2020 by The Goofy Anatomist

7.12. Coronary Arteries on the Posterior Aspect of the Heart
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The Right and Left Coronary Arteries (Posterior Aspect)

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On the posterior aspect of the heart, we can see the continuation of the right coronary artery:

  • AV nodal artery, which supplies the AV node.

  • Posterior interventricular branch*, which supplies the posterior aspect of both ventricular walls.

On the posterior aspect of the heart, we can see the continuation of the circumflex branch:

  • First and second left obtuse marginal branches, which supply the wall of the left ventricle.

*Note the variation of the origin of the posterior interventricular branch in human beings (in 70% of people, it arises from the RCA, in 20% of people, it arises from the LCA, in 10% it arises from both the RCA and LCA).