what is the most common form of keratinization for lining mucosa?
lining mucosa is _____ to help with speech mastication and swallowing
where is lining mucosa found? (5)
buccal and labial mucosa
floor of the mouth
ventral surface of tongue
what are 4 clinical considerations for lining mucosa?
easier to inject
infections spread quickly
why do infections spread quickly with lining mucosa?
what are fordyce's spots/grandules
misplaced sebaceous glands (appear as yellow spots)
what appear as yellow spots and are misplaced sebaceous glands?
where is masticatory mucosa located (3)
dorsal surface of tongue
masticatory mucosa can be _______ and/or ______
what color does orthokeratinized appear as?
what color does parakeratinized appear as?
t/f orthokeratinized epithelium contains nuclei
FALSE! no nuclei
t/f orthokeratinized is the most common epithelium in the oral cavity
FALSE! least common
what five things does orthokeratinized epithelium protect against?
physical, chemical and microbial attack
dehydration and heat loss
t/f parakeratinized has no nuclei
FALSE! they have nuclei
what is parakeratinized epithelium associated with?
higher level of attached gingiva
parakeratinized epithelium has special protection against what?
what are three clinical considerations for masticatory mucosa?
sutures rarely needed
injections more difficult (don't have to go as deep)
longer healing time (24 days)
what causes tissue to become hyperkeratinized?
why is the linea alba formed?
t/f nonkeratinized tissue can transform into keratinized in response to trauma
true dat mhm
hyperkeratinization may occur in response to _____ trauma (give examples)
chemical-heat from smoking or hot liquids
hyperkeratiziation from chemical trauma is reversible how?
if the source of trauma is removed
where is specialized mucosa found?
dorsal and lateral surfaces of the tongue
what is specialized mucosa?
t/f labial and buccal mucosa is extremely thin
false it be thick!
is the alveolar mucosa thick or thin?
the floor of mouth/ventral surface of tongue function as ____ ____
the ____ portion is firmer than the _____ of the hard palate
what is the difference between a free gingival graft and a subepithelial connective tissue graft
free gingival graft the tissue comes from the hard palate (keratinized)
subepithelial connective tissue graft they use the lamina propria (more vascular no keratin)
describe the anterior 2/3 of the tongue
tightly packed straited muscle bundles; little adipose tissue
what portion of the tongue is tightly packed striated muscle bundles with little adipose tissue
describe the posterior 1/3 of the tongue
bulkier less mobile and less adipose tissue
what portion of the tongue is bulkier less mobile and has less adipose tissue
what type/types of mucosa is the dorsal surface of the tongue? what part is it on the tongue?
masticatory mucosa-covers muscle tissue
specialized mucosa -tongue papilla
which of the papilla on the tongue are not taste buds
which papilla on the tongue are associated with taste buds?
the taste buds have a ____ turnover time
what portion of the taste bud transmits taste?
central portion has taste cells to transmit taste
what is the taste pore
opening in the taste cell
what are four fundamental taste sensations?
what is the most common papilla on the tongue
where are the filiform papilla located?
body of dorsal surface of tongue
what is the size of a filiform papilla
what texture does the filiform papilla have?
filiform papilla have increased _____ which gives them a ____ color
what is the function of a filiform papilla
guide food back to pharynx
which papilla has the function to guide the food back to the pharynx
where are fungiform papilla located?
body of dorsum of tongue
what is the shape of the fungiform papilla
mushroom mushroom-badger badger badger badger badger badger badger badger AH its a SNAKE
what is the size of fungiform papilla?
what is the color of a fungiform papilla
read (highly vascularized)
what is the function of the fungiform papilla?
taste YUM FOOOOD!
what papilla are located on the posterior portion of the tongue?
foliate papilla (lil leafy)
what is the appearance of the foliate papilla?
4-11 vertical ridges
where are the taste buds located on the foliate papilla?
how many circumvallate papilla are there?
7-15 (unless you are in head and neck then the answer changes)
what is the size of the circumvallate papilla?
what papilla are located anterior to the sulcus terminalis?
the circumvallate papilla have a ______ trough/trench around them
circular (von ebner's salivary gland)
what is the circular trough/trench around the circumvallate papilla?
von ebner's salivary gland
what is the purpose of the von ebner's salivary glands?
produces saliva into trench around papilla to keep them clean so you can taste
where are the von ebner's salivary glands located
around the circumvallate papilla
what is the cause of geographic tongue
changes in filiform papilla (go from parakeratinized to ortho)
what are the symptoms of geographic tongue?
sore or burning tongue (can be hereditary)
what is the shape of geographic tongue?
changes with time
t/f geographic tongue must be treated surgically.
what is the cause for black hairy tongue?
normal shedding of epithelium of filiform papilla does not occur (EW GAG!)
what is the effect of fungal overgrowth due to high does of antibiotics or radioation?
black hairy tongue
what is the treatment for black hairy tongue
BRUSH YOUR TONGUE SICKO!
t/f older peoples turnover time won't be as quick as younger