From where does the heart muscle receive its blood supply?

Question

Quizplus · Accepted Answer

The heart muscle receives its blood supply from the coronary arteries, which branch off the aorta and supply blood directly to the heart tissue. The vena cava brings deoxygenated blood from the body to the right atrium, the left ventricle pumps oxygenated blood to the systemic circulation, and the pulmonary veins bring oxygenated blood from the lungs to the left atrium, but none of these vessels supply blood directly to the heart muscle.

From Where Does the Heart Muscle Receive Its Blood Supply