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Cranial Nerves
Anatomy
| Question | Answer |
|---|---|
| I Olfactory | Function: special sensory Source/Target: olfactory epithelium |
| II Optic | Function: special sensory Source/Target: retina of eye |
| III Oculomotor | Function: motor Source/Target: 4 extrinsic muscles of eye |
| IV Trochlear | Function: motor Source/Target: 1 extrinsic muscle of eye |
| V1 Ophthalmic | Function: sensory Source/Target: skin- upper 1/3 of face |
| V2 Maxillary | Function: sensory Source/Target: skin- middle 1/3 of face, teeth |
| V3 Mandibular | Function: sensory Source/Target: skin- lower 1/3 of face, teeth, tongue Function: motor Source/Target: 3 muscles of mastication |
| VI Abducens | Function: motor Source/Target: 1 extrinsic muscle of eye |
| VII Facial | Function:motor Source/Target: muscles of facial expression Function: special sensory Source/Target: taste of anterior 2/3 of tongue |
| VIII Vestibulocochlear | Function: special sensory Source/Target: inner ear (cochlea & vestibular apparatus) |
| IX Glossopharyngeal | Function: special sensory Source/Target: taste on posterior 1/3 of tongue Function: motor Source/Target: muscles of pharynx |
| X Vagus | Function: sensory Source/Target: skin of throat +external ear canal Function: special sensory Source/Target: gag reflex (chemical) Function: motor Source/Target: muscles of pharynx & gut |
| XI Accessory | Function: motor Source/Target: muscles of pharynx, trapezius, sternocleidomastoid |
| XII Hypoglossal | Function: motor Source/Target: muscles of the tongue |