22. The cavities inside the frontal, maxillary, sphenoid, & ethmoid bones that drain into nasal
cavities are called .
23. The exchange of oxygen from blood to cells is called respiration.
24. The exchange of oxygen from air to blood is called respiration.
25. The lower part of the pharynx is called the .
26. The machine used to measure breathing volume is called a .
27. The maximum breathing volume (usually approx. 4800 ml) is called capacity.
28. The membrane that lines the tubes in the respiratory system is called the respiratory .
29. The millions of tiny sacs that exchange oxygen and carbon dioxide are called .
30. The nasal are small partitions of bone, covered in mucosa, that provide extra surface
area for the mucous membranes.
31. The portion of the larynx that closes during swallowing is the .
32. The portion of the pharynx directly behind the mouth is the .
33. The substance that coats the inside of the alveoli is called .
34. The term nares refers to the .
35. The tonsils of the oropharynx are called the tonsils.
36. The tubes that equalize pressure on the inside of the ear drum are the tubes.
37. The two tubes that branch off the trachea are called the .
38. The upper part of the pharynx is called the .
39. The volume that can be exhaled after expiring tidal volume (1000 - 1200 ml) is called capacity.
40. The wall that divides the nasal cavities is called the .
41. Tonsils contain tissue.