When using the paralleling technique, the patient must bite down on the image receptor holder bite block as far away from the teeth as possible with the exception of which area?
a. Maxillary anteriors
b. Mandibular canines
c. Maxillary premolars
d. Mandibular molars
d. The patient must bite down on the bite block as far away from the teeth as possible, using the full extent of the bite block. The exception to this rule is for the mandibular premolar and molar regions, where the image receptor can be close to the teeth and still remain parallel because of the nearly vertical position of the mandibular premolars and the slightly inward inclination of the mandibular molars.
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Organisms of the same species that reside in a distinct geographic area are called a(n):
a. community c. population b. territory d. ecosystem
A biopsy of a nodular lesion of the tongue showed several noncaseating granulomas. The patient was found to have similar lesions in the hilar regions of his lungs. He most likely has which of the following?
a. Benign lymphoepithelial lesion b. Sarcoidosis c. Lymphoma d. Necrotizing sialometaplasia e. Mumps