<P> The left coronary artery ( abbreviated LCA ) is an artery that arises from the aorta above the left cusp of the aortic valve and feeds blood to the left side of the heart . It is also known as the left main coronary artery ( abbreviated LMCA ) and the left main stem coronary artery ( abbreviated LMS ) . It is one of the coronary arteries . </P>
where is the left main coronary artery located
arises from the aorta above the left cusp of the aortic valve