Which of the following substances is still occasionally used?
A) chloroform
B) nitrous oxide
C) diethyl ether
D) enflurane
C
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Which of the following is a basic principle of the paralleling technique?
a. The image receptor is placed perpendicular to the long axes of the teeth. b. The central ray of the x-ray beam is directed parallel to both the teeth and the recording plane of the image receptor. c. The image receptor is placed parallel to the long axes of the teeth. d. The central ray of the x-ray beam is directed perpendicular to an imaginary bisector.
Per CPT guidelines, if a lesion is biopsied and then the remainder of the lesion is removed, what code(s) is (are) assigned?
A) Code for the biopsy and one for the lesion excision B) A code for the lesion excision only C) A code for the biopsy only D) A code for multiple lesions
The major work of the urinary system is performed by the:
A) bladder B) ureters C) kidneys D) liver
Define each of the following terms:
leukocyte