Question

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

Answer 1

Explanation:

Lungs contain millions of alveoli which provide a surface for the exchange of gases. An extensive network of blood vessels is present in the wall of the alveoli. By lifting our ribs and flatten the diaphragm, the chest cavity becomes spacious. Air is sucked into the lungs and alveoli. The oxygen from the breath, diffuses into the blood and CO2 from the blood brought from the body, diffuses out into the air.

Answer 2

_____________________________

There are millions of alveoli in the lungs.

The presence millions of alveoli in the lungs provides a very large area for the exchange of gases.

And the ability of large surface area maximize the exchange gases.

For example– if all alveoli from the to human lungs are unfolded, they would give an area of about 80 square metres ( which is nearly the size of a Tennis Court ).

____________________________