Respiratory System

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Across
  1. 2. - tiny hair like structures that moves to remove the dust
  2. 4. concentration
  3. 7. commonly called as wind pipe
  4. 8. process in which air moves from high to
  5. 9. main organ of the respiratory system
  6. 10. network of branches in the lungs
Down
  1. 1. - breathing in air
  2. 3. organ where gas exchange takes place
  3. 5. tube that leads air into the lungs
  4. 6. contains vocal chords