How many coronary arteries do humans have

Left main coronary artery LMCA. The left main coronary artery supplies blood to the left side of the heart muscle the left ventricle and left atrium. The left main coronary divides into branches:. The left anterior descending artery branches off the left coronary artery and supplies blood to the front of the left side of the heart. The circumflex artery branches off the left coronary artery and encircles the heart muscle. This artery supplies blood to the outer side and back of the heart.

With an updated browser, you will have a better Medtronic website experience. Update my browser now. Your heart pumps blood to carry oxygen and nutrients to every organ and muscle in your body. Coronary Arteries Blood is supplied to the heart by its own vascular system, called coronary circulation.

Tags: aorta , arteries , blood , coronary arteries , coronary artery , coronary artery disease , coronary artery disease CAD , heart muscle. Coronary arteries eventually branch into arterioles. Arterioles then branch into innumerable capillaries through which blood will begin its flows back to the cardiac chambers see also the Coronary System Tutorial.

Function: The coronary arteries supply blood to the myocardium heart tissue itself: e. Changes in electrocardiograms can be recorded within beats when there is inadequate blood flow delivered to a region of the heart. More specifically, whenever coronary blood flow falls below what is required to meet metabolic needs, the myocardium is considered ischemic; the pumping capability of the heart is impaired, and there are associated changes in electrical activity e.