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