Which of these statements regarding the competency operators is FALSE?
a. They must be able to carry out an effective quality assurance program.
b. They must be competent in exposing, processing, and mounting dental radiographs.
c. They must know when to prescribe dental radiographs.
d. They must be able to identify errors that occur on dental radiographs.
c. The dentist prescribes dental radiographs.
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Which one of the following can cause a myocardial infarction?
A) A blood clot forms in one of the atria of the heart. B) The heart begins beating at a very slow rate. C) A coronary artery is obstructed by a blood clot. D) The heart muscle is so weakened it cannot effectively pump blood.
Artifacts that can be seen with cytocentrifuge-prepared slides can be interpreted as a clinically significant finding by mistake. Which of the following can be an artifact leading to a mistaken interpretation of bacterial organisms in a fluid?
a. Cytoplasmic projections of lymphocytes b. Starch particles c. Stain precipitate d. Degenerating tissue cells