what is diffusion? how does it help in the exchange of gases in lungs ?
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Explanation:
Diffusion is a process in which transport is driven by a concentration gradient. Gas molecules move from a region of high concentration to a region of low concentration. Blood that is low in oxygen concentration and high in carbon dioxide concentration undergoes gas exchange with air in the lungs.
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Diffusion is the natural movement of gases.
Gas exchange during respiration occurs through diffusion. Gas molecules move from a high concentration to a low concentration. Blood that is low in oxygen concentration and high in carbon dioxide concentration goes through gas exchange with air in the lungs.
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