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1.	The most posterior sinuses are the __________. A. maxillary B. frontal C. ethmoid D. sphenoid

2.	The most superior sinuses are the __________. A. maxillary B. frontal C. ethmoid D. sphenoid

3.	The largest sinuses are the __________. A. maxillary B. frontal C. ethmoid D. sphenoid

4.	Sinuses perform which function? A. warm and mostion inhaled air B. act as shock absorbers C. decrease the weight of the skull D. all the above

5.	How many facial bones have sinuses? A. 1 B. 2 C. 3 D. 4

6.	The ethmoid bone contains how many sinus cavities. A. 1 B. 2 C. none D. multiple

7.	The best projection to demonstrate the frontal sinuses is the __________ method? A. caldwell B. towne C. waters D. smv

8.	The best projection to demonstrate the maxiallry sinuses is the __________ method? A. caldwell B. towne C. waters D. smv

9.	The best projection to demonstrate the ethmoidal sinuses is the __________ method? A. caldwell B. towne C. waters D. smv

10.	The CR exiting the nasion best describes the _________ method. A. caldwell B. townes C. waters D. smv

11.	The waters method requires a 37 degree tube angulation. A. True B. False

12.	Sinus projections should always be done upright if possible. A. True B. False

13.	The petrous ridges are of no concern in sinus imaging. A. True B. False

14.	The OML forms a 37 degree angle for a caldwell method. A. True B. False

15.	The open-mouth waters method shows the maxillary sinuses within the open mouth. A. True B. False

16.	The CR entering 1/2 to 1 inch posterior to the outer canthus is a lateral projection. A. True B. False

17.	The paranasal sinuses differ in size and number from patient to patient. A. True B. False

18.	The lateral projection is the only view that clearly shows all the sinuses. A. True B. False

19.	All the paranasal sinuses are associated with facial bones. A. True B. False

20.	The largest sinuses are the sphenodial. A. True B. False

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