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9 Cards in this Set
- Front
- Back
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Cranial Nerves are innervated by ______________ |
the corticobular tracts |
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Efferent vs Afferent |
Efferent: Motor Afferent: Sensory |
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Efferent portions of CNs have cell bodies in the ______________ |
Nuclei in the brainstem |
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Afferent portions of the CNs have cell bodies in the __________________ |
Ganglia outside of the brainstem |
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CN V - Name - Type - Origin |
- Trigeminal - Mixed - Originate: Pons ~ Trigeminal motor nuclei ~ Trigeminal sensory nucleus |
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CN V - Motor innervation |
~ Masseter (mastication) ~ Temporalis (mastication) ~ Pterygoids (mastication) ~ Ant belly of Digastric (elevates hyoid) ~ Mylohyoid (elevates hyoid) ~ Tensor Veli Palatini (tenses/lifts palate) ~ Tensor Tympani (dampen chewing noise) |
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CN V - Sensory innervation (by branch) |
- Opthalmic: forehead, eyes, nose - Maxillary: upper lip/teeth, palate, cheeks - Mandibular: ant 2/3 of tongue, lower lip/teeth |
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CN V -Functions |
Jaw Movement - mastication - articulation - Hyolaryngeal elevation - tensing/closure of Soft Palate |
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CN V - Damage (includes UMN & LMN) |
- ipsilateral atrophy of masseter muscle - jaw opening/closure diffs - deviation while opening jaw (toward weak pterygoid) - UMN ~ unilateral = no sig effects ~ bilateral = hypertonia - LMN ~ unilateral = ipsilateral effects ~ bilateral = hypotonia |
