Across
- 4. larger air passages of the lungs
- 6. roof of mouth
- 8. middle part of pharynx
- 9. flap of cartilage covering windpipe
- 12. membrane that covers surface of lungs
- 13. the voice box
- 14. bones in the sides of the nasal cavity
Down
- 1. relating to hollow structure
- 2. entrance to the respiratory tract, smell
- 3. windpipe
- 5. tiny air sacs of the lungs
- 6. major nerve
- 7. spongy,air-filled organs
- 10. passageway from mouth to nose
- 11. large ductless gland in the neck