How are the alveoli designed to maximise the exchange of gases suggest any two features?
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Alveolis have this sac like structure which inceases the surface area for absorption of gasses .
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♥ The alveoli are thin walled and richly supplied with a network of blood vessels to facilitate exchange of gases between blood and the air filled in alveoli .
♥ Alveoli have balloon-like structure . Thus , provide maximum surface for exchange of gases .
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