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Oral Bio 2 > Oral Mucosa > Flashcards

Oral Mucosa Flashcards

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1
Q

Oral Mucosa Function

A

Protection, sensation, secretion

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2
Q

simple epithelium

A

one layer

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3
Q

stratified epithelium

A

more than 1 layer

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4
Q

oral mucosa

A

stratified squamous epithelium
lines oral cavity, palate, tongue, alveolar bone
no langerhans cells- makes mucosa susceptible to allergens
keratohyaline granules (clumps of connection fibers)

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5
Q

2 layers of oral mucosa

A

1- stratified squamous epthelium: keratinized, nonkeratinized, parakeratinized
2- lamina propria: CT that supports epithelium (2 layers papillary and reticular)

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6
Q

Lamina Propria

A

mechanical support to the epithelium and carries blood vessels and nerves
papillary layer- directly under the epithelial layer, loose CT, more cells
reticular layer- dense CT fibrous layer located under papillary level
oral mucosa of cheek had thinner lamina propria than lip

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7
Q

Epthelium

A

thinnest in sublingual mucosa

alveolar mucosa has small rete pegs, gingiva has tall rete pegs

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8
Q

Oral Mucosa classification

A
  • Lining (non Keratinized)- Lips, cheeks, floor of mouth, alveolar bone, soft palate, ventral tongue
  • Mastificatory (keratinized)- gingiva and hard palate
  • Specialized (typically keratinized)- dorsal surface of tongue
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9
Q

Mucocutaneous junction

A

transition area between skin and oral mucous membrane

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10
Q

vermillion border

A

line seperating vermillion zone and skin

outline of the lips

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11
Q

vermillion zone

A

thin, keratinized epthelium
long CT papillae
numerous capillary loops in papillae
from wet/dry border outwards- where you put chap stick

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12
Q

intermediate zone

A

between vermillion zone and labial mucosa

parakeratinized stratified squamous epthelium

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13
Q

Free/ marginal gingiva

A
  • gingivl margin to free ginigival groove, gingival sulcus, vestibule and oral cavity
  • typically keratinized stratified ssquamous, can be non kertanized or parakeratinized
  • long thin epthelial rete pegs interdigitate with underlying CT of lamina propria
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14
Q

sulcular epthelium

A

lines the gingival sulcus. is non keratinized, thinner, and lacks the pronounced rete ridges

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15
Q

attached gingiva

A

free gingival groove to the mucogingival junction

keratinized stratified squamous with stipling

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16
Q

mucogingival junction

A

marked transition between epithelium of the attached gingiva (masticatory) and that of the alveolar mucosa (lining)

17
Q

interdental papilla

A

occupies the embrasure between teeth

keratinized stratified squamous epthelium

18
Q

Col

A

concave tissue between peaks of the interdental papillae

nonkeratinzied

19
Q

incisive papilla

A

remnant of nasal palatine duct

bump on anteriomedial part of hard palate

20
Q

hard palate

A

median raphe- keratinized
mucoperiosteum-lamina propria attached directly to teh underlying bone, no submucosa
rugae
anterolateral- contains adipose tissue
posterolateral- minor slaivary glands (sometimes parakertainized)

21
Q

specialized mucosa

A

dorsal surface of the tongue
keratinized and non kertinized
taste buds

22
Q

filiform

A

most numerous
dorsal tongue
no taste buds

23
Q

fungiform

A

mushroom shaped
scattered over anterior tongue
taste buds on dorsal surface

24
Q

circumvallate

A

largest
along sulcus terminalis
surrounded by trench
taste buds on lateral surface

25
Q

foliate

A

posterolateral border
parallel ridges with furrows
taste buds in furrows

26
Q

dentogingival junction

A

junction between attached gingiva and tooth (enamel or cementum)

27
Q

junctional epithelium

A

floor of gingival sulcus, extends apically to form seal, derived from REE

28
Q

epthelial attachement

A

“glue”
basal lamina like material
enamel cuticle from protective ameloblasts
hemidesmosomes in junctional epithelium

29
Q

gingival sulcus

A

above junctional epithelium, continuous with JE
non keratinized
healthy sulcus does not have rete pegs
cell to cell desomsomes

30
Q

dentogingival epithelium

A

CT supports JE is different than that under gingival and sulcular epithelium
this allows JE to have hemidesmosomes on both surfaces
gingival and sulcular epthelium mature due to SUPERFICIAL, INSTRUCTIVE
JE does NOT mature because of DEEPER, PERMISSIVE influences

31
Q

Dentogingival Epithelium pt 2

A

Influence of inflammatory cells

  • gingival epthelium: Not supported by CT containing inflammatory cells. Epithelium Keratinizes
  • Sulcular and JE: supported by CT containing inflammatory cells. does NOT keratinize
32
Q

proliferation of JE

A

not able to proliferate w/out inflammatory cells
normal slow apical proliferation w/ low level of inflam cells
more inflam cells teh faster it proliferates and migrates apically
leads to attachment loss

Oral Bio 2 (17 decks)

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