Across
- 2. Can also be known as the windpipe
- 4. You have two of these
- 8. The sheet of muscle under the lungs
- 9. The opposite of exhale
- 10. A gas breathed in
Down
- 1. A gas breathed out (6,7)
- 3. An air sac at the end of the Respiratory system
- 5. A model used to illustrate the respiratory system (4,3)
- 6. Provides protection to the lungs (3,4)
- 7. The useful product of respiration