The nurse is assessing the patient with a pen light. The integrity of which cranial nerve is being evaluated?
a. Olfactory
b. Vagus
c. Oculomotor
d. Trigeminal
ANS: C
In evaluating the oculomotor nerve, the pupils are examined for size, shape, and equality; pupil-lary reflex tested with a pen light (pupils should constrict when illuminated); and ability to follow moving objects. The olfactory nerve is assessed using smells. The vagus nerve is assessed using the ophthalmoscope. The trigeminal nerve is assessed with a safety pin and hot and cold objects for sensations of pain, touch, and temperature.
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