Question

give reason:- the lungs are designed in human beings to maximize the area of exchange of gases.

Answer 1

In the lungs, the air passage (wind pipe) divides into smaller tubes, called bronchi in turn form bronchioles. The bronchioles which terminate in balloon like structures, are called alveoli. Each lung contains 300 350 million 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.

Answer 2

it is just because of alveoli because alveoli has balloon like structure when we inhale the gas then alveoli blown up so therefore the lungs are designed in humans to maximize the area of exchange of gases.......


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