Respiratory anatomy

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Across
  1. 5. base
  2. 7. diaphragm
  3. 10. two
  4. 11. three
  5. 12. expiration
  6. 14. bronchioles
  7. 15. dioxide
  8. 16. sacs
  9. 17. hilum
Down
  1. 1. oxygen
  2. 2. inspiration
  3. 3. carina
  4. 4. bifurcation
  5. 6. alveoli
  6. 8. thorax
  7. 9. apex
  8. 13. pleura
  9. 14. bronchus
  10. 15. ducts
  11. 18. lobe