Atrial Arteries

Atrial Arteries The structures indicated are the atrial branches of the right coronary artery. The atrial arteries come off the right coronary artery to supply the right atrium of the heart. The atrial arteries are often describes in terms of three groups: Anterior Lateral Posterior The anterior and lateral branches mainly supply the right atrium, whereas the posterior branch supplies both the right and left atria. Learn more about the blood supply to the heart in this anatomy tutorial.