A PA cranial projection with accurate positioning demonstrates
1. equal distances from the lateral orbital margin to the lateral cranial cortices on each side.
2. the anterior clinoids and dorsum sellae superior to the ethmoid sinuses.
3. the petrous ridges horizontally through the lowest third of the orbits.
4. the internal acoustic meatus horizontally through the orbital center.
a. 1 and 2 only
b. 3 only
c. 1, 2, and 4 only
d. 1, 2, 3, and 4
C
You might also like to view...
The nasal mucosa produces about 1 ________ per day of mucus, which is used to moisten the air moving through the nose and to trap pollen, dust, and other foreign matter traveling through the nose
a. ounce b. cup c. quart d. gallon
Which of the following best represents the closed pack position of the wrist?
a. 15 ° wrist flexion b. 10 ° wrist extension c. Full wrist flexion d. Full wrist extension