Video: Alveoli Definition, Function & Diagram -

Alveoli form directly by budding led by a single epithelial cell alveoli alveoli with a homo- geneous substance Fibroblastic buds in other parts of the section were also present , some of these contained a fine lumen alveoli Each person has hundreds of millions of alveoli in their lungs This network of alveoli, bronchioles, and bronchi is known as the bronchial tree The lungs

alveoli Alveoli are formed to increase the density of gas exchange surface on the acinar airway tree, thus facilitating diffusion of oxygen to and into the capillaries