Question

write a note on alveoli
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Answer 1

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Alveoli are sac-like structure, also called unit of lungs which helps in exchange of gases. Alveoli are highly vascular and permeable for easy exchange of CO2 and 02.

Answer 2

Answer:

It comes under conducting part....It is a sac like structure where exchange of gases takes place according to partial pressure difference of O2 and CO2...