Children's Hearts at West Virginia University - Anatomy and Function of the Coronary Arteries Anatomy and Function of the Coronary Arteries Coronary arteries supply blood to the heart muscle. The two main coronary arteries are the left and right coronary arteries.
Additional arteries branch off the two main coronary arteries to supply the heart muscle with blood.
The circumflex artery branches off the left coronary artery and encircles the heart muscle. This artery supplies blood to the back of the heart. The left anterior descending artery branches off the left coronary artery and supplies blood to the front of the heart. Since coronary arteries deliver blood to the heart muscle, any coronary artery disorder or disease can have serious implications by reducing the flow of oxygen and nutrients to the heart, which may lead to a heart attack and possibly death. Click here to view the Online Resources page of this Web.