Across
- 1. tiny air sacs where gas exchange happens
- 4. caused by spasming diaphragm
- 5. muscular disc under the lungs
- 6. swelling of vocal cords (possibly from infection)
- 8. flaplike structure that prevents liquid or food from entering trachez
- 10. divides the nasal cavity
- 13. voicebox
- 15. diaphragm and intercostals relax
Down
- 2. diaphragm lowers and intercostals contract
- 3. spongy organs with lobes
- 7. system that has gas exchange as primary function
- 9. windpipe
- 11. part of the brain that controls breathing
- 12. throat
- 14. caused by low oxygen; forces a deep breath