Which supplies blood to the heart muscle?

• A. Pulmonary Artery
• B. Aorta
• C. Renal Artery
• D. Coronary Artery

Answer: (D)

Blood to the heart muscle comes from the coronary arteries, the vessels that branch off the aorta and wrap around the heart to feed the myocardium with oxygen-rich blood. These arteries are dedicated to nourishing cardiac muscle, so they’re the direct source of its blood supply. If flow through them is interrupted, heart tissue quickly becomes ischemic, leading to serious problems like a heart attack. The other vessels have different primary roles: the pulmonary artery sends blood to the lungs, the aorta supplies the body but gives rise to the coronary arteries, and the renal artery feeds the kidneys. Thus, the coronary arteries are the direct suppliers to the heart muscle.