Blue fingernails can be a result of:

A. low blood sugar.
B. a fungal infection of the nail.
C. good perfusion.
D. low oxygen levels in the blood.

Answer: D

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Conditions that would indicate the need for a periapical radiograph include each of the following except one. Which one is the exception?

A) Abscess B) Cleft palate C) Large caries D) Root fracture

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In which of the following conditions might the intensity of the heart sounds be reduced? 1. Heart failure 2. Severe cachexia 3. Pneumothorax 4. Pleural effusion

a. 1, 3, and 4 only b. 2 and 4 only c. 2, 3, and 4 only d. 1, 2, and 3 only

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