Why are alveoli so small and uncountable in number?
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Answered by
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Alveoli are uncountable in number in order to increase the exchange of gases in the lungs. They are too small so that number of alveolus can fit in it and increase the exchange of gases.
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Answered by
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The small size, coupled with the vast amount of alveoli - means that the body can absorb much more oxygen than if our lungs were simply two huge 'empty bags'. The surface area is far greater in our lungs because of the number of alveoli.
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