Oral Histology Flashcards
what type of epithelium is present within the oral mucosa
stratified squamous epithelium
what type of connective tissue is present in the oral mucosa
lamina propria
what may or may not be present in the oral mucosa
submucosa
the oral epithelium can be ______________ or _____________
keratinized or nonkeratinized
how many layers does the oral epithelium contain
3 or 4 varying in thickness
keratinized epithelium containing keratin and nuclei
parakeratinized
keratinized epithelium containing keratin but NO nuclei
orthokeratinized
oral epithelium and lamina propria
basement membrame
epithelial projections towards the lamina propria
rete ridges
lamina propria projections towards the epithelium
connective tissue papillae
the oral lamina propria is made of what type of fibers
type I
what are the two layers of the oral lamina propria
papillary layer and dense fibrous layer
which layer of the lamina propria is more superficial
papillary layer
papillary layer of the lamina propria is made of ________________ tissue
loose connective
what does the papillary layer of the lamina propria contain
blood vessels, nerve tissues, and capillary plexus
what does the dense layer of the lamina propria contain
connective tissue fibers
attaches mucosa to bone or muscle
oral submucosa
where is the submucosa located
beneath the oral mucosa
what may the submucosa contain
fat and/or minor salivary glands
is lining mucosa keratinized or nonkeratinized
nonkeratinized
how many layers are there to the lining mucosa and what are they
3: basal, intermediate, and superficial
what does the interface of the lining mucosa look like
relatively flat
what type of fibers are present in the lining mucosa
elastic fibers
is there a submucosa in the lining mucosa
usually, yes
what are types of lining mucosa
buccal mucosa, labial mucosa, ventral surface of the tongue, floor of the mouth, alveolar mucosa and soft palate
is the epithelium of buccal mucosa thick or thin
thick
what does the submucosa in the buccal mucosa contain
adipose tissue
is the epithelium in the floor of the mouth and ventral surface of the tongue thick or thin
thin
what does the submucosa in the floor of the mouth and ventral surface of the tongue contain
loose connective tissue and adipose tissue
what does the submucosa within the soft palate contain
adipose tissue
why is the soft palate sometimes yellow
adipose tissue
is masticatory mucosa keratinized or nonkeratinized
keratinized
how many layers are there to the masticatory mucosa and what are they
4: basal, prickle, granular, and keratin
what does the interface look like in the masticatory mucosa
highly interdigitated
what is the lamina propria like in masticatory mucosa
fibrous
is there a submucosa present is masticatory mucosa
thin or absent
what are types of masticatory mucosa
hard palate and gingiva
what type of epithelium does the hard palate have
thick orthokeratinized
why is the hard palate firm
due to attachment of lamina propria to bone
where is the submucosa at on the hard palate
lateral portions of the hard palate
what type of epithelium does gingiva have
parakeratinized
where does the gingiva extend to
mucogingival junction
is there a submucosa present in the gingiva
no
where keratinized gingival tissue transitions to nonkeratinized alveolar mucosa
mucogingival junction
is the dentogingival junction keratinized or nonkeratinized
nonkeratinized
what is included within the dentogingival junction
junctional epithelium and sulcular epithelium
if the dentogingival junction is healthy what is not present
rete ridges
point of attachment of gingiva to the tooth surface
junctional epithelium
where is the gingival col located
posterior dentition
what forms gingival col
interdental gingiva
is gingival col keratinized or nonkeratinized
nonkeratinized
how many types of specialized mucosa are there are what are they
4: filiform, fungiform, circumvallate, and foliate
is filiform papillae keratinized or nonkeratinized
keratinized
where are filiform papillae located
dorsal surface of the tongue
do filiform papillae have taste buds
no
where are fungiform papillae located
dorsal surface of the tongue
how do fungiform papillae look
red
do fungiform papillae have taste buds
yes
which papillae are the largest
circumvallate
where are circumvallate papillae located
near the terminal sulcus
do circumvallate papillae have taste buds
yes
what is located in the submucosa of circumvallate papillae
serous salivary glands of von Ebner
where are foliate papillae located
lateral surface of tongue
do foliate papillae have taste buds
yes
total loss of taste
ageusia
partial loss of taste
hypogeusia
unpleasant taste
parageusia
inaccurate taste
dysgeusia
