Explain the role of diffusion in gas exchange in humans. ...


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5th Form - Homeostasis and Excretion

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Question:

Explain the role of diffusion in gas exchange in humans.

Author: MissScarrott




Answer:
Oxygen from air in the lung diffuses into the blood along a concentration gradient. Similarly, carbon dioxide diffuses out of the blood into the air in the lungs along a concentration gradient. Oxygen is needed for Respiration and carbon dioxide is a product.


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