Mammalian lungs have an enormous number of minute alveoli (air sacs). This is to allow

Question

Mammalian lungs have an enormous number of minute alveoli (air sacs). This is to allow (A) more surface area for diffusion of gases (B) more space for increasing the volume of inspired air (C) more nerve supply to keep the lungs working (D) more spongy texture for keeping lung in proper shape

Tardigrade Admin · Accepted Answer

The number of alveoli in the human lungs has been estimated to be approximately 300 million. This enormous number of alveoli are meant to increase surface area of lungs for diffusion of gases,

Q. Mammalian lungs have an enormous number of minute alveoli (air sacs). This is to allow

more surface area for diffusion of gases

more space for increasing the volume of inspired air

more nerve supply to keep the lungs working

more spongy texture for keeping lung in proper shape

The number of alveoli in the human lungs has been estimated to be approximately $300$ million. This enormous number of alveoli are meant to increase surface area of lungs for diffusion of gases,