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Cranial Nerves CSU
Cranial Nerve
| Question | Answer |
|---|---|
| Olafactory | Number:I Function:Sensory Activity: Sense of smell |
| Optic | Number:II Function:Sensory Activity:Vision |
| Oculomotor | Number:III Function:Motor Activity:Pupillary reflex, extrinsic muscle movement of eye |
| Trochlear | Number:IV Function:Motor Activity:Eye Muscle Movement |
| Trigeminal | Number:V Function:Mixed Activity: Opthalmic branch: sensory impulses from scalp, upper eyelid, nose, cornea, and lacrimal gland. Maxillary branch - sensory impulses from lower eye lid, nasal cavity, upper teeth, upper lip, alate. |
| Abducens | Number:VI Function:Mixed Activity: Extrinsic movement of eye. |
| Facial | Number:VII Function:Mixed Activity: Taste (anterior two-thirds of tongue). Facial movements such as smiling, closing of eyes, frowning. Production of tears and salivary stimulation. |
| Acustic/Vestibulocochlear | Number:VIII Function:Sensory Action: Vestibular Branch: sense of balance or equilibrium. Cochlear branch: sense of hearing. |
| Glossopharyngeal | Number:IX Function:Mixed Activity:produces the gag and swallowing reflex. Taste (posterior portion of the tongue.) |
| Vagus | Number:X Function:Mixed Activity: Innervates muscles of throat and mouth for swallowing and talking. |
| Accessory | Number:XI Function:Motor Activity:Movement of trapezius and sternocleidomastoid muscles. Some movement of larynx, pharynx, and soft palate. |
| Hypoglossal | Number:XII Function:Motor Activity: Movement of tongue for swallowing, movement of food during chewing, and speech. |
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