Which vessels supply the heart muscle with its blood supply?

• A. Aorta
• B. Pulmonary Artery
• C. Pulmonary Veins
• D. Coronary Vessels

Answer: (D)

Blood nourishing the heart muscle comes from the coronary vessels—the coronary arteries that originate from the aorta just above the aortic valve and spread over the heart to deliver oxygen-rich blood to the myocardium. This dedicated blood supply is essential because the heart muscle has a high oxygen demand and needs a rapid flow to keep pumping effectively. The veins of the heart drain used blood through the coronary veins into the coronary sinus, which empties into the right atrium.

The pulmonary artery and pulmonary veins are involved in the lungs’ blood flow, not in feeding the heart muscle itself. The aorta is the main artery of systemic circulation; it carries blood to the body, and the coronary arteries are its branches that specifically supply the heart muscle.