11418044
Description
Flashcards by Megan Cobarruvias, updated more than 1 year ago
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Created by Megan Cobarruvias
about 7 years ago
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| Question | Answer |
| What are the clinical implications of a damaged/paralyzed occulomotor n. (CN III)? | Lateral strabismus: inability to pull eyeball medially and dorsally (medial rectus, dorsal rectus muscles not functional) Ptosis: unable to innervate levator palpebrae superioris m. to lift upper eyelid |
| What types of fibers are present in the occulomotor n. and what do they innervate? | General Sensory Efferent: extrinsic muscles of the eyeball General Visceral Efferent: PS fibers to ocular smooth muscle |
| What types of fibers are present in the trochlear n. and what do they innervate? Consequences of Injury? | General Sensory Efferent: supply dorsal oblique muscle of the contralateral side Injury: dorsolateral strabismus (dorsal oblique m. non-functional; unable to rotate eye the opposite direction |
| What are the major branches of the Trigeminal n.? | Opthalmic, Maxillary, Mandibular nerves |
| What are the terminal branches of the Facial n.? What do they innervate? | Cervical branch: partidoauricularis m., ventral aspect of cutaneous trunci Auriculopalpebral nerve: orbicularis oculi , frontalis m., rostral auricular muscles |
| What nerves contribute to the pharyngeal plexus? What does the plexus supply? | Glossopharyngeal (CN IX), Vagus (CN X), Hypoglossal (CN XII) Supplies pharyngeal muscles (GSE), pharyngeal mucosa (GSA), glands of pharyngeal mucosa (GVE) |
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