Respiratory system

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Across
  1. 4. diaphragm
  2. 5. oxygen
  3. 7. sinus; cavity
  4. 9. to revive
  5. 10. pus
Down
  1. 1. bronchiole; smaller subdivision of the bronchus
  2. 2. nose
  3. 3. pleura; serous membrane that enfolds the lung
  4. 6. chest
  5. 8. tissue