Respiratory System

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Across
  1. 1. tissue in the nasal cavity that traps and moves particles
  2. 3. reflex triggered by dust allergens or pollutants
  3. 6. phase of breathing when air moves into the lungs
  4. 8. openings where air enters the body
  5. 9. chamber that warms moistens and filters air
  6. 10. lower portion of the pharynx that leads to the larynx
  7. 11. muscle that contracts and relaxes to control breathing
  8. 12. passageway that connects nasal cavity to the larynx
  9. 13. double membrane surrounding each lung
  10. 17. tube reinforced with C shaped cartilage rings that carries air to the lungs
  11. 19. flap of cartilage that prevents food from entering the trachea
  12. 21. structure containing vocal cords responsible for sound production
  13. 22. movement of oxygen and carbon dioxide through the bloodstream
  14. 25. two main branches from the trachea leading to each lung
  15. 26. network of branching airways within the lungs
  16. 27. middle portion of the pharynx behind the mouth
  17. 29. elastic organs for breathing enclosed by the pleural membranes
  18. 30. exchange of oxygen and carbon dioxide between blood and body cells
  19. 31. lung with three lobes
  20. 32. blood vessels that surround alveoli for gas exchange
  21. 33. oxygen monitored by the brain for breathing control
  22. 35. chest cavity where lungs expand and contract during breathing
  23. 36. property of lung tissue that helps expel air during exhalation
  24. 37. upper portion of the pharynx behind the nasal cavity
Down
  1. 2. system that transports gases between lungs and body cells
  2. 4. cause airflow as gases move to equalize pressure differences
  3. 5. movement of air in and out of the lungs
  4. 7. part of the brain that controls rate and depth of breathing
  5. 14. phase of breathing when air is forced out of the lungs
  6. 15. exchange of oxygen and carbon dioxide between lungs and blood
  7. 16. system that supplies the body with oxygen and removes carbon dioxide
  8. 18. lung with two lobes
  9. 20. reflex preventing overexpansion of the lungs
  10. 23. smallest air passages in the lungs
  11. 24. carbon dioxide monitored by the brain for breathing control
  12. 28. tiny air sacs where oxygen and carbon dioxide are exchanged
  13. 34. structures that vibrate to produce speech