10 how oxygen and carbon dioxide exchanged in our body during respiration
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main site is through alveli in lungs where the body 's gaseous ecchange occurs
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Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
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