respiratory system

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Across
  1. 1. chronic obstructive pulmonary disease
  2. 3. upper respiratory infection
  3. 5. bring oxygen into the body and remove carbon dioxide
  4. 9. windpipe
  5. 10. absence of breathing
  6. 12. 2 large tubes that branch out from the trachea and get air to the lungs
  7. 14. lung,air
  8. 15. classes off trachea during swallowing
Down
  1. 2. throat, air to and from nose to trachea
  2. 4. air saces where oxygen and carbon dioxide exchange occurs
  3. 6. sleep
  4. 7. nose
  5. 8. larynx
  6. 11. provide mucus
  7. 13. cystic fibrosis
  8. 16. tuberculosis