how are the alveoli designed to maximise the exange of gases
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Alveoli provide a surface for theexchange of gases. An extensive network of blood vessels is present in the wall of the alveoli. ... Air is sucked into the lungs and alveoli. The oxygen from the breath, diffuses into the blood and CO2 from the blood brought from the body, diffuses out into the air.
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The alveoli are the small ballon like structure present in the lungs . The walls of the alveoli consists of extensive network of blood vessles. Each lung contains 300-350 million alveoli, making a total of 700 million alveoli in both the lungs . The alveolar surface when spread out covers about 80m sq area. This large surface area makes the gaseous exchange more efficient .
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