Vena cava --> Right atrium --> (Through the atrioventricular valve) --> Right ventricle --> Goes through semi lunar valve to the pulminary artery to the lungs.
Comes back from the pulmonary vein as oxygenated blood --> (atrioventricular valves open) ---> goes through left atrium ---> to the atrioventricular valve ---> left ventricle --> semi lunar
Coronary artery provides heart with nutrients
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