how are the lungs designed in human beings to maximise the area for exchange of gases?
Answers
Hey Mate Heres the ans;
They are designed like bean.
And bronchiols are there in it. At the end of the bronchiols a Ballon like structure is present called alveoli exchange of gases takes place through these alveoli.
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♤ In the lungs, the air passage that divides into smaller and smaller tubes called bronchi which form bronchioles .
♤ The bronchioles terminate in the balloon like structure called alveoli.
♤ The alveoli present in the lungs provide maximum surface for exchange of gases.
♤ The alveoli have very thin walls and contain an extensive network of blood vessels to facilitate exchange of gases.