Respiratory

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Across
  1. 2. voice box
  2. 5. Vocal cords that close the larynx during swallowing
  3. 9. membrane attached to the surface of each lung
  4. 13. Process of exhaling
  5. 15. Another sinus
  6. 17. Outer membrane of the lungs
  7. 19. Air-filled spaces
  8. 21. adenoids
  9. 23. Vocal cords responsible for sound
  10. 24. Two tubes that lead from the trachea
  11. 25. The ones most people call tonsils
Down
  1. 1. One of the sinuses
  2. 3. The air sacs
  3. 4. Hair of the nose
  4. 6. Smaller branches of the bronchi
  5. 7. Smaller of the two lungs, composed of two sections
  6. 8. Bone in the back of the nose that subdivides the passageway
  7. 10. Substance secreted by cells of the lungs to reduce surface tension
  8. 11. Tonsils at the base of the tongue
  9. 12. Fluid found in the pleural cavity
  10. 14. hole between the true vocal cords
  11. 15. Flap that keeps food from going into the trachea
  12. 16. Volume of air moved into or out of the lungs during quite breathing
  13. 18. Process of inhaling
  14. 20. Cartilage that makes up the rings of the trachea
  15. 22. windpipe