13 - Oral & Nasal Cavities - Stephens Flashcards
where is the vestibule?
between the gums and the cheek
what supplies blood to posterior 2/3 of nasal cavity?
sphenopalatine artery
what nerve spirals around the submandibular duct? in what direction?
lingual n; superior lateral to inferior medial
where is the sublingual gland located?
superior surface of mylohyoid m.
what provides blood to sublingual gland?
sublingual branch of the lingual artery
how is sublingual gland innervated?
autonomics, same as SM gland
what will damage to the mylohyoid cause?
sagging of one side of the floor of the mouth (if unilateral)
postganglionic sympathetic fibers to the sublingual gland travel thru what plexus?
facial or sublingual plexus*
innervation of intrinsic muscles of tongue?
hypoglossal
what does the sulcus terminalis divide?
ant 2/3 and post 1/3 tongue: ectoderm/endodermal origin
m. of tongue not innervated by hypoglossal n?
platoglossus
what are the symptoms of unilateral hypoglossal palsy?
paralysis, atrophy, and fasciulations of intrinsic m. of tongue; genoglossus m. will deviate tongue toward effected side “lick your wounds”
what does bilateral hypoglossal palsy present as?
dyspnea, dysarthria, dysphagia
where does all lymph of head and neck drain into?
deep cervical LN
what supplies blood to tongue?
lingual artery (and terminal branch: profunda lingual a.)
what is the muscularis uvulae innervated by?
X from pharyngeal plexus