Question

why do alveoli sacs need to be thin?

Answer 1

Explanation:

There are several different parts that make up the human respiratory system. One is the alveoli, which are small structures found at the ends of bronchioles inside of the lungs. Alveoli are like bunches of very small grapes and they have extremely thin walls.

Answer 2

Explanation:

alveoli sacs are thin the are the main place in the lungs

in alveoli the diffusion of gases takes place

oxygen enters into blood capillaries and CO2 enter out of blood

so the sacs needto be thin

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