Across
- 1. divide left and right nostrils
- 4. spasm of the diaphragm
- 6. air sacks in the lungs
- 8. also known as the windpipe
- 9. lack of oxygen in tissues
- 10. bones that divide the nasal cavity
Down
- 2. respiratory center of brain
- 3. voice box
- 5. cavity where lung sit
- 7. where cellular respiration takes place