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Question
Exchange of gases in the human body occurs in the:
Exchange of gases in the human body occurs in the:
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Solution
The correct option is A Alveoli
Alveoli is one of the sites at which the exchange of oxygen and carbon dioxide occurs. Alveoli contain higher concentrations of oxygen as compared to the blood and blood contains higher concentrations of carbon dioxide. Due to this concentration gradient, the exchange of these two gases takes place through diffusion. Gas exchange also occurs between the blood and the cells.
Alveoli is one of the sites at which the exchange of oxygen and carbon dioxide occurs. Alveoli contain higher concentrations of oxygen as compared to the blood and blood contains higher concentrations of carbon dioxide. Due to this concentration gradient, the exchange of these two gases takes place through diffusion. Gas exchange also occurs between the blood and the cells.
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