Across
- 2. Voicebox
- 3. Main airway to the lungs
- 4. The flap that prevents food from entering the windpipe
- 6. Tiny hair-like structures that filter air
- 8. Large breathing organs
- 9. Tube connecting the throat and lungs
- 10. Muscle that aids in breathing
Down
- 1. Branches of the trachea
- 5. The windpipe
- 7. Tiny air sacs where gas exchange occurs