Respiratory System Crossword

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Across
  1. 3. Element we need to live
  2. 5. also known as the windpipe
  3. 6. Strong breathing muscle
  4. 7. Bone like substance
  5. 9. Lung with two lobes
  6. 10. Carries oxygen
  7. 12. Vessels to the heart
  8. 13. Membranes
  9. 14. Common name for alveoli
  10. 18. Oral opening for air
  11. 20. Describes breathing
  12. 21. What we breathe
  13. 22. Bronchial __________
  14. 24. Protects the lungs and heart
Down
  1. 1. Section of the lung
  2. 2. Vessels to the body
  3. 4. To let out air
  4. 7. Sinus ______
  5. 8. Air sacs
  6. 11. Organs for breathing
  7. 15. Lung with three lobes
  8. 16. tiny hair like structure
  9. 17. Four chambered organ
  10. 18. Thick fluid in the sinuses
  11. 19. Element of living things, _______ dioxide
  12. 23. Using air