Oral Cavity Flashcards
posterior extend of oral cavity proper
oropharyngeal isthmus
2 arches in oral cavity, and structure lying between them
- palatoglossal arch
- palatopharyngeal arch
palatine tonsils
borders of oral cavity
roof: hard and soft palate
floor: tongue and sublingual area
ant/lat: teeth and gums
post/lat: 2 arches
what forms palatine aponeurosis
tensor veli palatini
innervation of tensor veli palatina
V3
action and innervation of levator veli palatini
elevates and retracts soft palate
inn: CN X (pharyngeal br)
what is ascending palatine artery a br of
facial a
what is palatine artery a br of
ascending pharyngeal a
venous drainage of oral cavity
to pterygoid and pharyngeal plexuses
where does the nasopalatine n pass?
incisive foramen
what is the space around tonsils called
fauces
lingual n
br of V3, emerges between lat and med pterygoid mm
CN XII
- deep to post belly of digastric and stylohyoid mm
- runs ant btwn submandibular gland and hyoglossus m
- inf to lingual n
- ends in post tongue to provide motor innervation
CN IX
- general and special sensory
- lat to stylopharyngeus mm
- ends in post tongue to provide motor inn
innervation of extrinsic tongue mm
CN XII EXCEPT palatoglossus (CN X)
innervation of intrinsic tongue mm
CN XII
brs of lingual a
- dorsal lingual a
- sublingual a
- deep lingual a
special sensory to tongue
- chorda tympani: CN VII, taste to ant 2/3
- glossopharyngeal: CN IX, taste to post 1/3
- vagus: CN X, taste from root of tongue and epiglottis
general sensory to tongue
- lingual n (V3): ant 2/3
- glossopharyngeal: post 1/3
- vagus: root of tongue and epiglottis
n and a to ant max teeth
ASA
a. is br of infraorbital a
n and a to premolar max teeth
MSA
a. is br of infraorbital a
n and a to post max teeth
PSA
a. is br of maxillary a
n and a to mandibular teeth
IA
a. is br of maxillary a
n and a to ant mand teeth
incisive
