respiratory system

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Across
  1. 4. Inflammation of the bronchi lining
  2. 5. Voice box
  3. 6. space inside your lungs
  4. 7. Helps inhale and exhale
  5. 9. Protects lungs from chest wall
Down
  1. 1. Think mucus lining
  2. 2. Get rid of bacteria germs and dust
  3. 3. Prevents food from going into the windpipe
  4. 8. removes carbon dioxide