Respiratory System Crossword

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Across
  1. 7. The pharynx superior to the larynx
  2. 8. Slit between the vocal cords
  3. 12. Each bronchi divides into smaller branches known as _____________.
  4. 14. The Bronchi that is slightly shorter, wider, and more vertical making it foreign objects more likely to enter this side of the lungs.
  5. 16. The part of the thoracic cavity that includes the heart, aorta, esophagus, trachea, and bronchi.
  6. 18. tree and lungs.
  7. 20. Fluid on surface of alveolus which reduces surface tension of water and prevents collapse of alveoli.
  8. 21. Upon exhale, the diaphragm ___________, moving upward to push carbon dioxide out of the lungs.
  9. 24. Gas exchange occurs here
  10. 27. The volume of air left in the lungs after a person has exhaled as much as they can
Down
  1. 1. C-shaped rings that prevent the airways from closing
  2. 2. The ____________respiratory tract includes the nose, mouth, pharynx, epiglottis, larynx, and trachea.
  3. 3. Within the lungs the bronchi branch many times ending in tiny air sacs known as _________.
  4. 4. Also known as the voice box.
  5. 5. Tiny hair-like projections that work to swat away debris (like dust and bacteria in the mucus)
  6. 6. The pharynx posterior to the nose
  7. 9. Main airway made of smooth muscle and cartilage rings
  8. 10. divides the left and right nares
  9. 11. The pharynx posterior to the mouth
  10. 13. The flap that covers the larynx and trachea so that food does not enter the airways.
  11. 15. The respiratory system works closely with this body system to exchange gases between the air and blood
  12. 17. Upon inhale, the diaphragm ___________, moving downward so the lungs can expand with oxygen
  13. 19. Another term for nostrils.
  14. 22. The cavity the lungs sit in.
  15. 23. This lung has only two lobes
  16. 25. When blood pH becomes too low, the blood is considered _______. The body will increase the respiratory rate to maintain homeostasis
  17. 26. The ____________ respiratory tract includes the