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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)
The arteries supply blood and oxygen to the muscle. The muscle is located near the teres minor muscle, which is the primary muscle found surrounding the rotator cuff. The teres major starts just below the armpit and stops at the top of the humerus, the large bone of the upper arm.he arteries supply blood and oxygen to the muscle. The muscle is located near the teres minor muscle, which is the primary muscle found surrounding the rotator cuff. The teres major starts just below the armpit and stops at the top of the humerus, the large bone of the upper arm.