Cranial nerve function, testing technique, and classic cranial nerve lesion presentations tested on USMLE Step 1.
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- What is cranial nerve I (CN I) called?
- The olfactory nerve
- What is cranial nerve II (CN II) called?
- The optic nerve
- What is cranial nerve III (CN III) called?
- The oculomotor nerve
- What is cranial nerve IV (CN IV) called?
- The trochlear nerve
- What is cranial nerve V (CN V) called?
- The trigeminal nerve
- What is cranial nerve VI (CN VI) called?
- The abducens nerve
- What is cranial nerve VII (CN VII) called?
- The facial nerve
- What is cranial nerve VIII (CN VIII) called?
- The vestibulocochlear nerve
- What is cranial nerve IX (CN IX) called?
- The glossopharyngeal nerve
- What is cranial nerve X (CN X) called?
- The vagus nerve
- What is cranial nerve XI (CN XI) called?
- The accessory nerve
- What is cranial nerve XII (CN XII) called?
- The hypoglossal nerve
- What sensory function does CN I (olfactory nerve) provide?
- Smell
- On a CN XII (hypoglossal nerve) palsy, which direction does the protruded tongue deviate?
- Toward the side of the lesion
- Which extraocular muscles does CN III (oculomotor nerve) innervate?
- All extraocular muscles except the lateral rectus and superior oblique