Definition, Meaning & Synonyms

alveolus

Noun

/ælˈviːə.ləs/

Definition

An alveolus is a tiny air sac in the lungs where the exchange of oxygen and carbon dioxide takes place.

Examples

The alveoli expand as we inhale, filling with air.
In a healthy lung, there are millions of alveoli working to ensure oxygen reaches the bloodstream.
Damage to the alveoli can lead to respiratory issues.

Meaning

Alveoli are small, balloon-like structures that allow for the exchange of gases during breathing. They are essential for effective respiration and are located at the ends of the bronchioles in the lungs.