What are the vessels that deliver blood to heart muscle called?

• A. Coronary arteries
• B. Aortic branches
• C. Veins
• D. Capillaries

Answer: (A)

The vessels that deliver blood to the heart muscle are called coronary arteries. These arteries supply the myocardium, which is the thick muscular layer of the heart, with oxygen-rich blood essential for its function. The heart requires a constant supply of oxygen to maintain its rhythm and pump efficiency, and this is specifically provided by the right and left coronary arteries, which branch off the aorta just above the aortic valve.

The aortic branches refer to various arteries that diverge from the aorta to supply other parts of the body but do not directly supply blood to the heart muscle itself. Veins are responsible for returning deoxygenated blood back to the heart rather than supplying blood to it. Capillaries play a role in the exchange of materials between blood and tissues but are not responsible for delivering blood to the heart muscle. Thus, the coronary arteries are uniquely suited for this role, ensuring that the heart receives the necessary oxygenation to function effectively.