there are millions of air sacs in your lungs
alveoli
I believe the smallest are the alveoli (air sacs), since there are millions of them in the lungs.
Alveoli
It is to increase the surface area of the lungs so that more oxyen can be taken in.
The bronchi continue to divide into smaller and smaller branches until they end in air sacs. The air sacs in the lungs are called alveoli.
it is called the avoile
i think its called the ALVEOLI
air sacs are in the lungs and when you breathe in blood carries it to the lungs.
Birds lungs are called lungs but birds also possess air sacs for help in respiration .
Alveoli. Singular is alveolus. You have millions of alveoli in your lungs.
Alveoli