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Which physical law explains elastance?  A. Gay-Lusasac’s law B. Charles’ law C. Boyle’s law D. Hooke’s law

In the healthy lung, when the alveolus decreases in size during a normal exhalation, the: 1. surface tension decreases 2. surfactant to alveolar surface area increases 3. surface tension increase 4. surfactant to alveolar surface tension decreases A. 1 only  B. 3 only C. 4 only D. 1 and 2 only

Which alveolar cells are macrophages?  A. Type I B. Type II C. Type III D. Type IV

The mucus blanket is produced by: A. Pores of Kohn B. Lymphatic system C. Macrophages D. Goblet cells

Match the partial pressure of the following gases:  

The area where most gas exchange occur in the interstitium is termed: A. tight space B. loose space C.  tight and loose space D. none of the above  

At higher elevations, there is less air pushing down from above, which allows the air molecules to move further away. This term is referred to as ________________.

Which structures are contained in the mediastinum? (Select all that apply)I. Trachea II. Great vessels III. HeartIV. Pituitary gland 

___________ refers to the study of forces in action. A. Static B. Resistance C. Combustion D. Dynamic

During exhalation, the intra-alveolar pressure decreases toward atmospheric pressure and allows the elastic properties of the lungs to return to their normal resting level.