Question

How are lungs designed in human beings to maximum the area for exchange of gases?

Answer 1

human beings are having alveoli which maximisis the surface area for the exchange of gases as there are 300 to 700 million alveoli present in our body which covers the are of 80m square.

Answer 2

♤ 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.