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Right coronary artery

Dr Mohammed Izhar et al.

The right coronary artery is one of the two coronary arteries and arises from the aorta just above the aortic valve from the right aortic sinus. In up to 50% of cases there are two ostia ²:

large ostium for the main right coronary artery
small ostium for an infundibular branch

The right coronary artery courses in the right atrioventricular groove to the inferior surface of the heart, and then (in right dominant configuration) turns anteriorly as the inferior interventricular artery. In left dominant hearts this branch arises from the left circumflex artery.

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