Right Coronary Artery
The structure indicated is the
right coronary artery of the heart. The coronary arteries arise from the
aortic sinuses of the
ascending aorta. The
right coronary artery (RCA) arises from the
right aortic sinus and the left coronary from the left aortic sinus. The right coronary artery then runs in the
coronary sulcus, which separates the atria from the ventricles. The right coronary artery gives off the following branches:
The coronary artery from which the posterior descending artery arises determines the
coronary dominance. The posterior descending artery may arise from the circumflex artery of the left coronary artery. Right dominant is more common than left dominant. Learn more about the
blood supply to the heart in this anatomy tutorial.
