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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 largest artery is the aorta, the main high-pressure pipeline connected to the heart's left ventricle. The aorta branches into a network of smaller arteries that extend throughout the body. The arteries' smaller branches are called arterioles and capillaries.The pulmonary arteries carry oxygen-poor blood from the heart to the lungs under low pressure, making these arteries unique. Coronary artery disease makes a heart attack more likely. 2  Carotid artery disease: Atherosclerosis with narrowing of one or both of the carotid arteries in the neck. 3  Disease of the carotid arteries makes stroke more likely.