oral mucosa Flashcards
waldeyer’s ring
anatomical location of lymphoid tissue found posteriorly along pharyngeal wall
sebaceous glands
fordyce granules
-yellow aggregates
what is found in the submucosa
- blood vessels
- nerves
- salivary and sebaceous glands
mucoperiosteum location
-gingiva and parts of the hard palate
what is unique about the mucoperiosteum
NO submucosa, which provides a firm inelastic attachment
* lamina propria attached directly to periosteum
lamina propria of oral mucoperiosteum
has sharp dense fibers, few and smaller vessels
2 functional populations of oral epithelium
- progenitor
2. maturing
progenitor pop
provides new cells
maturing pop
differentiation or maturation to form protective layer (ie. K or NK)
rate of proliferation is ____(higher or lower) in gingiva vs cheek
rate is higher for gingiva
KSSE location
- masticatory mucosa
- hard palate, gingiva, dorsal part of tongue
NK SSE location
- labial mucosa
- buccal mucosa
- ventral tongue
- soft palate
- floor of the mouth
describe the pathologic correlation with NK and K SSE
K of NK tissue can occur in response to chronic irritation or pre-cancerous conditions
types of cells seen in NKSSE
- melanocytes
- langerhans cells (immune)
- merkel cell (not dentritic!)
- inflammatory cells
oral pigmentation can occur in response to
increased melanin deposition
what type of collagen is seen in lamina propria
1 and 3
basal lamina has 4 and 6
what type of collagen is present in inflamed tissue
type 5!
what cells are present in lamina propria (LP)
- fibroblasts
- macrophages
- mast cells
- inflammatory cells
- endothelial cells
types of mucosa
- masticatory
- lining
- specialized
what is found between the hard and soft palate
palatine raphe
-some submucosa present
regions of the lip
- skin
- vermillion zone
- intermediate zone
- labial mucosa (buccal mucosa)
skin
- thin KSSE
- dermis, sebaceous glands, hair follicles, sweat glands
vermillion zone
- thin ORTHO KSSE
- many narrow CT papillae
- meissner’s corpuscles
- no salivary glands! few sebaceous glands
intermediate zone
- thin PARA KSSE
- long irregular CT papillae
- submucosa has minor salivary glands and fat
labial mucosa (buccal mucosa)
- thin NKSSE
- long CT papilla
- dense fibrous ct
- submucosa: dense collagenous CT, fat, minor salivary glands
what condition is associated with ther vermillion zone
solar elastosis
v shaped groove that separates the two parts of dorsal tongue
sulcus terminalis
anterior 2/3 of tongue
-body (1 pharyngeal arch)
posterior 1/3
base (3rd pharyngeal arch)
lymphoid tissue (lingual tonsils) are found
posterior 1/3 of tongue
minor salivary glands of the dorsal tongue (lamina propria) are found
posterior portion ONLY
mucosa of tongue is bound to
CT around muscles of tongue
the tip of the sulcus terminalis
foramen cecum
types of papilla on tongue
- filiform
- fungiform
- foliate
- circumvallate
filiform
- most numerous (covers anterior surface)
- ortho KSSE
- NO TASTE BUDS
fungiform
- scattered at tip of tongue
- NKSSE
- taste buds
foliate
- lateral margins of posterior tongue
- NKSSE
- some taste buds
circumvallate
- adjacent and anterior to sulcus terminalis
- glands of von ebner found under
- superior surface is K, lateral is NK with taste buds
what type of cells are found in he taste bud
gustatory epi cells
