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Flashcards in Oral Mucosa - TRUMP Deck (45):
1

Fxs of the oral mucosa.

Protection
-Separates and protects deeper tissues from oral

Sensation
-Temp, touch, pain, taste
-Reflexes: swallowing, gagging

Secretion
-Saliva

2

What are the types of epithelium?

Simple
-Squamous
-Cuboidal
-Columnar

Stratified
-Squamous nonkeratinized
-Squamous keratinized
-Cuboidal
-Columnar

Pseudostratified

Transitional
-Relaxed
-Distended (Pressed down)

3

Stratified squamous epi has underlying _______ ______.

Lamina propria

4

Stratified squamous epithelium lines what 4 places?

Oral cavity

Palate

Tongue

Alveolar bone

5

T/F - The oral mucosa covers all oral surfaces except the teeth.

TRUE

6

What are the 2 layers of the oral mucosa?

Stratified squamous epithelium
- Can be:
—Nonkeratinized
—Orthokeratinized
—Parakeratinized

Lamina propria
-CT that supports the epi
-2 layers
—Papillary - Higher
—Reticular - Lower

7

Buccal, vestibular, soft palate are what? Non, ortho, or para?

NON

8

Diff b/t ortho and para?

Ortho - No nuclei
-Granular cell layer

Para - Nuclei
-No granular cell layer

9

What are the stratum layers?

Basale

Spinosum

Granulosum

Lucidum

Corneum

10

What are three characteristics of oral mucosa?

Prominent basal lamina
-separates epi and lamina propria

Keratohyaline granules
-Granular layer

Lack of Langerhans cells
-Mucosa susceptible to potential allergens
-These cells typically fight off foreign things, w/o those, allergies result

11

What is the fx of lamina propria?

Mechanical support to the epi and carries blood vessels/nerves

12

Tell me more about the papillary layer.

Directly under epithelial layer, loose CT, more cells

13

Tell me more about the reticular layer.

Dense CT fibrous layer located under papillary layer

14

T/F - Oral mucosa of the cheek has a thinner lamina propria than the outer surface of the lip.

TRUE

15

T/F - Sublingual mucosa has the thinnest epithelium of the oral cavity, great for drug delivery.

TRUE

16

T/F - Alveolar mucosa has small rete pegs, gingiva has tall rete pegs.

TRUE

17

Lining mucosa is what?

Masticatory is what?

Specialized is what?

Lining - NON-KERATINIZED

Masticatory - KERATINIZED

Specialized - KERATINIZED

18

Lining mucosa covers what structures?

Lips

Cheeks

Floor of mouth

Alveolar bone

Soft palate

Ventral tongue

19

Masticatory mucosa covers what?

Gingiva

Hard palate

20

Specialized mucosa covers what?

Dorsal surface of the tongue

21

What is the mucocutaneous junction?

Transition area b/t the skin and the oral mucous membrane

22

What is the vermillion border?

Line separating vermillion zone and skin

23

What is the vermillion zone?

Thin, keratinized epi

Long CT papillae

Numerous capillary loops in papillae

24

What is the intermediate zone?

B/T vermillion zone and labial mucosa

Parakeratinized stratified squamous epithelium

25

What are the boundaries of the free gingival margin?

Gingival margin

Free gingival groove

Gingival sulcus

Vestibule

Oral cavity

26

T/F - Typically, the epithelium of the free gingiva is kera strat sq, but can also be para or non.

TRUE

27

T/F - Sulcular epithelium is nonkeratinized and lacks rete pegs.

TRUE

28

What are the boundaries of the attached gingiva?

Free gingival groove (coronally)

Mucogingival junction (apically)
-Marked transition b/t epi of the attached gingiva (masticatory) and that of the alveolar mucosa (lining)

*Epi is kera ss and typically is stippled

29

LOOK AT SLIDE 41 FOR GOOD PICTURE.

DO IT

30

What is the interdental papilla?

Occupies the embrasure b/t teeth below the contact

*Kera ss epi

31

What is the col?

Depression b/t peaks of the interdental papilla (below the contact)

*NONkera ss epi

32

T/F - Masticatory mucosa covers the hard palate.

TRUE
-Palatine or median raphe
-Kera ss epi

33

T/F - Hard palate has mucoperiosteum.

TRUE

*Lamina propria attached directly to the underlying bone, no submucosa

34

Specialized mucosa is where?

Dorsal tongue

*Kera or nonkera

*Taste buds

35

What are the 4 papillae of the tongue?

Filiform
-Most NUMEROUS
-No taste buds

Fungiform
-Mushroom shaped
-Anterior tongue

Circumvallate
-LARGEST
-Taste buds on lateral surface

Foliate
-Posterolasteral border

36

Hairy tongue is elongation of what?

Filiform papilla

37

What is the dentogingival junction?

Junction b/t attached gingiva and tooth
-enamel or cementum

38

What are the 2 components of the dentogingival junction?

Junctional epithelium
-Floor of gingival sulcus
-From REE

Epithelial attachment
-The glue
-Basal lamina-like

39

T/F - A healthy gingival sulcus should NOT have rete pegs.

What do rete pegs mean?

TRUE

*Inflammation

40

T/F - Cells of the sulcular epi are joined TO EACH OTHER by desmosomes.

TRUE

41

T/F - The JE has hemidesmosomes on both surfaces.

TRUE

42

Gingival and sulcular epi mature due to what?

Superficial, intructive influences

JE does NOT MATURE b/c of deeper, permissive influences

Hemidesmosomes on both surfaces of the epithelium

43

T/F - Gingival epi is NOT supported by CT containing inflammatory cells.

TRUE

It keratinizes!

44

T/F - Sulcular and JE ARE supported by CT with inflammatory cells.

TRUE

*These DO NOT KERATINIZE

45

Proliferation of JE. Tell me.

NOT ABLE to proliferate w/o inflammatory cells

Normal, slow apical proliferation w/ low level of inflammatory cells

W/ increase of inflammatory cells, JE proliferates and migrates apically
-Periodontal pocket
-Recession of attachment level