NREMT Advanced EMT

Category - Medical Knowledge

How many cranial nerves are being evaluated when testing for pupillary response?
  1. 1
  2. 2
  3. 3
  4. 4
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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