Question

what is alveoli?what do you mean that?

Answer 1

Alveoli is the end of the respiratory system in lungs.the bronchioles are divided into alveolar sac or duct where these alveoli are used for exchange of gases.

Answer 2

alveoli is present in lungs
The function of alveoli is,when deoxynated blood is pumped by heart to lungs in the lungs alveoli releases oxygen then deoxynated blood becomes oxynated blood then it reaches to heat then heart pumps to various parts of our body