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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 major systemic artery; this is the artery from which all others arise. ascending aorta. Ascends from the left ventricle in the heart. The only branches off the ascending aorta are the right and left coronary arteries, which serve the myocardium (middle or muscle layer) of the heart.