Left Coronary Artery (LCA): Function, Anatomy & Importance

The left coronary artery (LCA) is a blood vessel that supplies oxygenated blood to the heart muscle. It is one of the two main coronary arteries, along with the right coronary artery. The LCA arises from the aorta, just above the aortic valve, and travels down the left side of the heart. It then branches into two main branches, the left anterior descending (LAD) artery and the left circumflex (LCX) artery.

The LAD artery supplies blood to the anterior (front) wall of the heart, including the apex (tip) of the heart. The LCX artery supplies blood to the lateral (side) wall of the heart.

The LCA is an important blood vessel because it supplies oxygenated blood to the heart muscle. If the LCA becomes blocked, it can lead to a heart attack.