transport of O2 and CO2 to and from the lungs and tissues of the body by way of the cardiovascular system which uses blood as its transporting fluid. (3 of 4)
gas exchanges made between blood and tissue cells (4 of 4)
Process of exchanging gas (O2 and CO2) between the blood and alveoli. (2 of 4 events of Respiration)
Process of moving air into and out of the lungs to change and refresh gas in the lungs. (1 of four events of Respiration)
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