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NREMT Advanced EMT

Category - Medical Knowledge

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How many cranial nerves are being evaluated when testing for pupillary response?

Explanation

Answer - B - Two cranial nerves are being evaluated when testing for pupillary response. When you test for pupillary response with a penlight, you are evaluating the integrity of the optic nerve and the oculomotor nerve. The optic nerve (CN-II) senses the light and the oculomotor nerve (CN-III) responds by constructing the pupil.

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