this system delivers 02 and nutrients to all the cells in the body and 02 and waste to the lungs thought blood vessels. the main organ is the heart (the pump) the blood vessels- arteries @ veins and capillaries
pulmonary circulation- sends blood from the heat to the lungs and block systemic circulation - sends blood to the rest of the body and backto the heart
the lungs are where the oxygen and nutrients are picked up by also where the carbon dioxide and others waste is realesed from this blood. this happens in the alveold (air sacs) of the lungs.