explain how does exchange of gas takes place in alveoli??
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Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. 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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Gaseous exchange occur due to difference in partial pressure of gases in alveoli and capillary
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