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20 Cards in this Set
- Front
- Back
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List the 7 cranial nerves responsible for speech and swallowing; whether they are: S, M, S&M
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CN V: Trigeminal S&M; facial sensation
CN VII: Facial S&M; eyelid closing, facial expression, taste sensation CNVIII: Acoustic S; hearing, balance CN IX: Glossopharyngeal S; taste, swallowing CN X: Vagus S&M; swallowing, taste CN XI: Accessory M; neck & shoulder muscles CN XII: Hypoglossal M; Tongue movement |
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Where do cranial nerve nuclei reside?
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In the brainstem of the CNS
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What are the cranial ganglion?
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Gathering of sensory cranial nerve cell bodies - just outside the brainstem
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Where are the cell bodies of LMNs grouped?
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Inside the brainstem
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Where do LMNs synapse with UMNs?
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Within the brainstem
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The red nucleus is responsible for what type of movement?
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Gross movement, e.g., baby crawling
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What are the three branches of the CN V (Trigeminal)
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1-opthalmic (S)
2-maxillary (S) 3-mandibular (S&M) |
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What muscles does the mandibular branch of CN V innervate?
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1-muscles of mastication
2-mylohyoid 3-tensor tympani 4-tensor veli palatini |
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What important sensory information does CN V provide?
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1-Transmission of pain, thermal, tactile for face & forehead; mucous membranes of nose & mouth, teeth
2-Sensation of stretch receptors for jaw |
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What is the effect of lesions to CN V - unilateral vs. bilateral
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1- Lesions to masticatory nucleous or axons: paresis or paralysis to masticory muscles on paralyzed side
2-unilateral - no major effects on speech 3-bilateral - inability to close jaw, limited range of motion, slow movement |
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What are the motor and sensory functions of CNVII?
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Motor: facial expression; stapedius muscle for hearing
Sensory: salivary glands; taste receptors for anterior 2/3 of tongue |
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What are the 4 branches of CNVII?
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1-Temporal
2-Zygomatic 3-Buccal 4-Cervical |
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What is the effect of lesions to CNVII?
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1-LMN damage: paralysis on same side of face
2-Effecting voluntary, emotional, relexive movement 3-Atrophy: facial asymmetry 4-Fascicuations around mouth & chin 5-Bell's palsy (temporary) |
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What are the motor and sensory functions of CN IX?
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Motor: stylopharyngeus; upper constrictor muscles of pharynx
Sensory: Pharynx; taste for posterior 1/3 of tongue; eustacheian tube |
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What are the brances of CN X?
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1-Recurrent laryngeal nerve
2-Pharyngeal branch 3-Superior lanryngeal nerve |
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What are the motor and sensory funcions of CN X?
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1-soft palate
2-pharynx 3-larynx |
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What are the effects of damage to CN X?
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1-Pharyngeal branch: loss of gag reflex, hypernasality; dysphagia
2-Superior laryngeal nerve (above VF's): loss of sensation to upper laryngeal mucous membrane, paralysis of cricothyroid 3-Recurrent laryngeal nerve (below VF's): unilateral lesion: flaccid vocal fold (hoarse, breathy voice); bilateral lesion: paralyzed VF in adducted position |
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Hypo/hyper nasalty is associated with which cranial nerves?
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CN IX (Glossopharyngeal)
CN X (Vagus) CN XI (Accessory) |
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What are the motor functions of CN XII?
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Innervates all tongue muscles, except the palatoglossus
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What are the effects of damage to CN XII?
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1-Atrophy
2-Weakness 3-Fasciculations (on same-side as lesion) |
