SAR SH 522 Lecture Notes - Lecture 8: Lumbar Vertebrae, Shoulder Girdle, Accessory Nerve

• School: Boston University
• Department: Speech, Language & Hearing Sciences
• Course: SAR SH 522
• Professor: Polyak

Document Summary

Damage to cranial nerve 3: big pupils and eyes go out and up. Umn: damage to the gray matter and cortex of opposite side (droopy face on opposite side of damage) Lmn: damage to the same side of the droopy face. Innervates the intrinsic largyneal, pharynx, and soft palate muscles with cn 10 vagus (except ofr tensor. Unilateral: inability to turn head away from the side of lesion sternocleidomastoid. Restricted ability to elevate arm and drooping shoulder ipsilateral to lesion. Innervates all intrinsic tongue muscles and all extrinsic tongue muscles (except for palatoglossus, which is an instrisic muscle) It only has contralateral ber therefore it is a crossing cranial nerve, so . Umn damage will result in weakness of the tongue on the contralateral side. If you have right umn, the muscles on the left side will be weak. Lmn damage will result in weakness of the tongue on the ipsilateral side.