mjl1717
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What does cranial nerve VII do??
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| ssrpk
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Motor: Innervation of muscles of facial expression via five branches..also to the stapedius of middle ear
Parasympathetic: Submandibular & sublingual gland via submandibular ganglion - mucous glands of oral and nasal cavity - lacrimal glands via pterygopalatine ganglion
Afferent : taste fibers from the anterior two thirds of the tongue.[/b]
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| mjl1717
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GSA-ext. ear
GVA-no clinical significance
GVE-innervate lacrimal, submandibular , and sublingual glands(via s.s.nucleus)
SVA- ant.. 2/3 of tongue via chorda tympani
SVE -innervates muscles of the 1st branchial arch or facial expression.
Significant clinical entities:
1)Efferent limb of corneal refex
2)Crocodile tears syndrome
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| ssrpk
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much better
thnx 
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| beiwen
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CN VII supplies muscles derived from 2nd branchial arch (muscles of facial expression, stapedius, stylohyoid and posterior belly of digastric).
CN V supplies muscles derived from 1st branchial arch (muscles for mastication + tensor veli palatini, tensor tympani, mylohyoid and anterior belly of digastric).
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| mjl1717
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You're right , of course the arches respond to cranial nerves 5,7,9, and 10 respectively. Thats one thing about the exam . You dont want to miss something that you know.
My token of appreciation for your eagle eye is a pneumonic for the
Neural crest derivatives(bone or cartilage) of branchial arch #2.
Not Lust, BUT **LUSSS
Lesser horn of hyoid bone
Upper part of body of hyoid bone
Stapes
Styloid process
Stylohyoid ligament
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