Question

what is alveoli mention their role in respiration.​

Answer 1

Alveoli are an important part of the respiratory system whose function it is to exchange oxygen and carbon dioxide molecules to and from the bloodstream. These tiny, balloon-shaped air sacs sit at the very end of the respiratory tree and are arranged in clusters throughout the lungs.

Answer 2

Explanation:

any of the many tiny air sacs of the lungs which allow for rapid gaseous exchange. it increases the surface area for gas exchange... it also have blood vessels nearby through which blood gets oxygen directly from alveoli. it is very thin which increases the rate if diffusion of gas