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Step 5: The blood then goes through the side of the _____ to the_____. It leaves the heart through the
______. Then the blood travels through the
_______releasing _____ to the cells for _______ and absorbs ______ . The gas exchange
occurring here between the oxygen and carbon dioxide molecules occurs in the ______ of the organs. The blood then goes back to the _______ side of the
_______ through the veins and will go
through the _______ again.​