Respiratory System

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Across
  1. 1. mucus
  2. 8. toxic and odourless gas
  3. 10. small air sacs that exchange carbon monoxide and oxygen
  4. 11. windpipe after the pharynx
  5. 13. 2 airways to the lungs
  6. 14. horizontally elongated feature of the face
  7. 15. infection of the lungs
  8. 16. sharp and loud expel of air from the lungs
  9. 17. adjective of nose
Down
  1. 1. an overnight test of the respiratory system
  2. 2. grippe
  3. 3. caused by excessive amounts of phlegm
  4. 4. abbreviation of an underwater breathing machine
  5. 5. study of the respiratory system
  6. 6. voluntary action of inhaling a harmful substance
  7. 7. action of releasing air from the respiratory system
  8. 9. Bronchial allergy to proteins
  9. 12. largest organ in the respiratory system