How does the exchange of oxygen and carbon dioxide occur in the lungs and tissues?


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Q&A Related to "How does the exchange of oxygen and carbon dioxide..."
The primary function of the respiratory system is to exchange oxygen and carbon dioxide. Inhaled oxygen enters the lungs and reaches the alveoli. The layers of cells lining the alveoli
Within each air sac, the oxygen concentration is high, so
The gases move by diffusion down their concentration gradient from high to low.
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