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.

Answer this question based on the passage: where is the left main coronary artery located? Let's have some stream of consciousness first.
The important part for answering this question is: 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. So, the answer is arises from the aorta above the left cusp of the aortic valve and feeds blood to the left side of the heart.