Respiratory

123456789101112131415
Across
  1. 2. nose hairs
  2. 4. lack of oxygen
  3. 7. thin, double-layered serosa
  4. 8. difficulty breathing
  5. 10. main organ in the respiratory system
  6. 11. inflammation of the voice box
  7. 13. voice box
  8. 15. inhalation and exhalation
Down
  1. 1. instrument used to view the voice box
  2. 3. instrument used to measure breathing
  3. 5. inflammation of the pleura
  4. 6. throat
  5. 9. air sacs in the lungs
  6. 12. without breathing
  7. 14. windpipe