write on the role of diffusion in respiratour gaseous inchange
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Process of Gas Exchange The body needs a way to get oxygen in and carbon dioxide out, which is through diffusion. ... Since blood returning to the lungs has lots of carbon dioxide and very little oxygen, there is more oxygen in the alveoli compared to the blood. Oxygen diffuses into the blood from the alveoli.
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The body needs a way to get oxygen in and carbon dioxide out, which is through diffusion. ... The carbon dioxide concentration is much greater in your blood than the alveoli. So, by the rule of diffusion, the carbon dioxide moves from the blood to the alveoli, where it can be exhaled through the lungs.
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