Alveoli Lung Respiratory System

The Importance of Surface Area Alveoli of Lungs alveoli Bronchioles and alveoli in the lungs In your lungs, the main airways, called bronchi, branch off into smaller and smaller passageways The smallest airways, alveoli The walls of alveoli are extremely thin and comprised primarily of simple squamous epithelium The thin simple squamous cells that form the majority of an

alveoli Alveoli: Alveoli are tiny sacs that are found in the lungs The exchange of gases takes place in the alveoli during respiration takes place