Question

Using what you know about partition theory explain how oxygen diffuses from the air sac into the blood

Answer 1

Diffusion of oxygen into the blood takes place at the alveoli (air sacs). ... The walls of both the alveoli and the capillaries are very thin and oxygen and carbon dioxide move along the concentration gradient. This movement is called diffusion. Oxygen diffuses from the alveoli, into the blood in the capillaries.

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