The Role of Oxygen in The Work of The Respiratory and The Circulatory Systems
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The respiratory and circulatory systems work together to deliver oxygen to cells of the body (the lungs through air exchange, and the circulatory system by delivery of haemoglobin containing red cells to the capillaries where oxygen is released into the tissues) and removal of carbon dioxide.The circulatory system delivers nutrients absorbed through the walls of the small intestine to other...
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