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5 Cards in this Set
- Front
- Back
CN XII - Name - Type - Origin |
- Hypoglossal - Motor - Origin: Medulla |
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CN XII - Innervation |
- Intrinsic muscles of the tongue - Extrinsic muscles of the tongue ~ Genioglossus (contralateral innervation only) ~ Hyoglossus (bilateral) ~ Styloglossus (bilateral) |
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CN XII - Function |
- articulation - Oral stage of swallow - Pharyngeal stage of swallow ~ geniohyoid elevates larynx |
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CN XII - Damage |
At rest - Atrophy - Fasciculations - Tremor / random movements Protrusion - Deviation toward weak side Movement - Slow / discoordinated |
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CN XII - Damage (UMN vs LMN) |
- Unilateral ~ UMN = contralateral weakness ~ LMN = ipsilateral weakness - Bilateral ~ UMN = bilateral weakness, redux/slow movements ~ LMN = bilateral weakness |