CCRN Nursing Exam Prep - Adult Critical Care

Category - Adult Critical Care Registered Nurse Test Prep

Which cranial nerve is tested to assess the gag reflex?
  1. Trochlear nerve
  2. Trigeminal Nerve
  3. Vagus Nerve
  4. Glossopharyngeal Nerve
Explanation
Answer: D - The cranial nerve that is tested to assess the gag reflex in a person is the Glossopharyngeal nerve. Assessment of the vagus nerve identifies the symmetry of the arch of the tongue (the “ahh” test). One would test the trigeminal nerve to assess the ability to swallow and bilateral facial sensation. Testing the trochlear nerve identifies the ability of the patient to move their eyes.
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