Oral Cavity Flashcards
what is the posterior extent of the oral cavity
palatoglossal arch
what is the epithelium of the oral cavity
keratinized, nonkeratinized, parakeratinized stratified squamous
whats the neurovascularature of hard palate
greater palatine n
what two muscles help raise the soft palate
tensor veli palatini (right and left)
what are 2 muscles of the soft palate
palatopharyngeus m
palatoglossus m
what muscle is between lateral and medial pterygoid plates
tensor veli palatini
what other muscle helps raise the soft palate
levator veli palatini
what are the 3 arteries of the soft palate
descending palatine a
ascending palatine a
palatine a
where does the ascending palatine a branch off of
facial a (ECA)
where does the palatine a branch off of
ascending pharyngeal a (ECA)
Palatine veins drain where?
IJV from common facial
where do the sympathetics to the soft palate come from
deep petrosal nerve that hops on ICA
where do the parasympathetics come from?
greater petrosal nerve from CN VII
what innervates tensor veli palatini?
V3– MOTOR
what innervates
levator veli palatini? palatoglossus, palatopharyngeus, musculus uvulae, salpingopharyngeus m
CN X- MOTOR
what 5 arteries supply palatine tonsils
lesser palatine a ascending pharyngeal a ascending palatine a facial a dorsal lingual a
why can heavy bleeding occur with tonsillectomy?
so many artery branches
what nerve can be hit with a tonsillectomy?
CN IX
what does the submandibular duct run over?
lingual nerve
whats another name for the submandibular duct
wharton’s duct
what nerve emerges from the medial and lateral pterygoid m?
lingual nerve
what branch of CN V is lingual nerve from
V3
where do the parasymp fibers to the submandibular gland come from?
chorda tympani (CN VII) - taste to tongue
where do the sympathetic fibers to the submandibular gland come from?
external carotid plexus
what is motor innervation to posterior tongue
CN XII
what muscle of the tongue does CN XII not innervate
palatoglosseus (CN X)
what is sensory innervation to posterior tongue?
CN IX
what could happen if unilateral paralysis of CN XII were to happen?
deviation of tongue to paralyzed side
what happens with bilateral paralysis of CN XII?
inability to protrude tongue
what supplies most superficial structures of the oral cavity
facial a
what supplies most of deep structures of the oral cavity
lingual a
what are the 3 branches of the lingual artery
dorsal
deep
sublingual
taste anterior 2/3?
chorda tympani (CN VII)
posterior 1/3 taste?
IX
taste for root of tongue and epiglottis?
X
general sensory anterior 2/3?
lingual nerve-V3
sensory posterior 1/3?
IX
sensory of root of tongue and epiglottis?
X
2 branches of the infraorbital a?
ant. supr. alveolar
mid supr. alveolar
what supplies the oral cavity
infraorbital (2 branches)
post supr alv
inferior alveolar
ALL FROM MAXILLARY
what are the 3 layers of the epithelium of the oral cavity
stratum basale
stratum spinosum
stratum superficiale
what are the 4 types of papillae on the tongue
circumvallate
foliate
filiform
fungiform
what are located as dorsal surface taste buds
fungiform
which go away when you get older
foliate
which are pointy and are most numerous highly keratinized
filiform
which are nonkerattinzed and on the posterior part of tongue
circumvallate
what surrounds the vallate papilla
von ebner glands
what are special sensation taste receptors
chemoreceptors
what are sensory receptor organs
taste buds
what are cells of the taste bud
neuroepithelial or gustatory or sensory cells, supporting cells, and basal cells
what is the function of the major salivary glands
produce and secrete saliva
what are the 2 types of salivary gland cells
serous
mucous
the parotid gland doesn’t have what kind of secreting cells?
mucous secreting cells
what kind of cell type are parotid gland
branched acinar (SEROUS)
what kind of cell type is sublingual gland
branches tubuloacinar (mixed but mostly mucous)
what kind of cell type is submandibular
branched tubuloacinar (mixed but mostly serous)
what are serous demilunes?
mucous cells pushing serous cells out
