Each of the following will appear radiopaque on a panoramic radiograph except one. Which one is the exception?
A) Lateral pterygoid plate
B) Zygomatic process
C) Genial tubercles
D) Infraorbital foramen
D
Explanation: A) The infraorbital foramen appears radiolucent.
B) The infraorbital foramen appears radiolucent.
C) The infraorbital foramen appears radiolucent.
D) The infraorbital foramen appears radiolucent.
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In which of the following situations would four horizontal posterior bitewing radiographs be recommended?
a. Prior to the eruption of the permanent first molar b. Following the eruption of the permanent first molar c. Prior to the eruption of the permanent second molar d. Following the eruption of the permanent second molar
In a healthy adult at rest at sea level, what is the normal carbon dioxide gradient across the alveolar capillary membrane?
a. 40 mm Hg c. 27 mm Hg b. 60 mm Hg d. 6 mm Hg