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Heart & Blood Vessels: Your Coronary Arteries. The heart receives its own supply of blood from the coronary arteries. Two major coronary arteries branch off from the aorta near the point where the aorta and the left ventricle meet. These arteries and their branches supply all parts of the heart muscle with blood. Left Main Coronary Artery (also called the left main trunk)
Heart Anatomy: Blood Vessels. 1  Aorta-the largest artery in the body of which most major arteries branch off from. 2  Brachiocephalic Artery-carries oxygenated blood from the aorta to the head, neck and arm regions of the body. 3  Carotid Arteries-supply oxygenated blood to the head and neck regions of the body.