Alveolus

Summary: There are millions of alveoli (singular: alveolus) in your lungs. They create a large surface area. They have thin walls that are only one cell thick. These features help gas exchange occur quickly and easily. Tags: science student-book-7 biology Created: 2026-05-21 Last Updated: 2026-05-21

Alveolus

There are millions of alveoli (singular: alveolus) in your lungs. They create a large surface area. They have thin walls that are only one cell thick. These features help gas exchange occur quickly and easily.

Source

This concept is from the [Science Student Book 7](Science Student Book 7/Biology/Body Systems/2.6 Breathing - gas exchange.md), Biology section.