... supplies blood to the entire body. The pulmonary valve, like the aortic valve, has a semilunar shape and a unidirectional function. CORONARY CIRCULATION The blood supply to the heart muscle is furnished mainly by the CORONARY ARTERIES, which originate from the aorta immediately after the aortic valve. These vessels pass through the fatty tissue beneath the pericardium and then ... branch out into the heart muscle. The coronary veins transport the deoxygenated blood from the heart muscle to the right atrium ... . The heart's energy supply is almost completely dependent on these coronary ...

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• Grade Level: High School