how are alveoli designed and why
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The alveoli are adapted to make gas exchange in lungs happen easily and efficiently. ... they give the lungs a really big surface area. they have moist, thin walls (just one cell thick) they have a lot of tiny blood vessels called capillaries.
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alveoli provide and area for the exchange of gases. A large network of blood if found in the alveoli. Alveoli have thin membranes which allow the exchange of gases to take place more swiftly.
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