Body systemsQuestion 794 of 1700
What are alveoli?
- Muscles that move air in and out of the lungs
- Air passages that start in the nose
- Flaps that cover the airway when swallowing
- Tiny surfaces where gas exchange takes place
Show answer
Correct answer: Tiny surfaces where gas exchange takes place
Gas exchange takes place at the alveoli.
Source: Nursing Assistant (Reuter), 11.10: Respiratory System
Questions last reviewed: 18 October 2026