Respiratory System Crossword

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Across
  1. 1. a protective coating
  2. 3. the passages that branch from the trachea and direct
  3. 8. one of the tubules forming the respiratory system of most insects
  4. 11. into the lungs
  5. 12. Cavity the cavity behind the nose and above the roof of the mouth
  6. 13. is a sheet of muscles in the chest cavity
  7. 15. two spongy organs, located in the thoracic cavity
Down
  1. 2. hair like tubes that are in the primary bronchus
  2. 3. being able to pass air in and out of our lungs normally
  3. 4. gases between air and blood
  4. 5. smaller tubes branches of the airway
  5. 6. the throat; passageway for food to the esophagus
  6. 7. voice box, passageway for air moving from pharynx to the trachea
  7. 9. pumps carbon out of the lungs and oxygen into the lungs
  8. 10. air to the larynx
  9. 14. tiny sacs of lung tissue made for the movement