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Right coronary artery

Anatomy, function, definition and diagram of the right coronary artery.

Show transcript

Hey there everyone! It’s Matt from Kenhub, and in this tutorial, we will be discussing the right coronary artery. The coronary circulation is responsible for nourishing the heart during its tireless effort in pumping blood around the body. The focus of this video is the right coronary artery, which you can find here highlighted in green on this image of the anterior view of the heart. Along with the left coronary artery, the right coronary artery branches off of the ascending aorta.

The right coronary artery passes through the atrioventricular groove to the right side and continues on to the posterior surface of the heart. It supplies the right atrium, the majority of the right ventricle, the portion of the left ventricle that communicates with the diaphragm (areas of the interatrial and interventricular septa), the sinoatrial node in around sixty percent of the population, and the atrioventricular node in general.

This artery further divides into several branches including the sinoatrial nodal branch, the right marginal branch which runs to the right margin of the heart, and the atrioventricular nodal branch which supplies the atrioventricular node at the junction of the four heart chambers within the septae on the posterior side of the heart. Lastly, a posterior interventricular branch runs along the posterior interventricular groove.

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