The myocardium receives its blood supply from which vessels?

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Multiple Choice

The myocardium receives its blood supply from which vessels?

Explanation:
The heart muscle gets its blood supply from the coronary arteries, which originate from the aorta just above the aortic valve. These arteries deliver oxygen-rich blood directly to the myocardium to meet its high energy needs. The other vessels listed do not supply the heart muscle: the aorta mainly carries blood out to the body, the pulmonary arteries carry blood to the lungs, and the superior vena cava brings blood back to the right atrium. In addition, coronary perfusion primarily occurs during diastole when the heart is relaxed, allowing blood to flow into the coronary vessels.

The heart muscle gets its blood supply from the coronary arteries, which originate from the aorta just above the aortic valve. These arteries deliver oxygen-rich blood directly to the myocardium to meet its high energy needs. The other vessels listed do not supply the heart muscle: the aorta mainly carries blood out to the body, the pulmonary arteries carry blood to the lungs, and the superior vena cava brings blood back to the right atrium. In addition, coronary perfusion primarily occurs during diastole when the heart is relaxed, allowing blood to flow into the coronary vessels.

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