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Oral Bio Quiz 4 > Oral Mucosa - TRUMP > Flashcards

Oral Mucosa - TRUMP Flashcards

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Biology 101 flashcards
1
Q

Fxs of the oral mucosa.

A

Protection
-Separates and protects deeper tissues from oral

Sensation

  • Temp, touch, pain, taste
  • Reflexes: swallowing, gagging

Secretion
-Saliva

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2
Q

What are the types of epithelium?

A

Simple

  • Squamous
  • Cuboidal
  • Columnar

Stratified

  • Squamous nonkeratinized
  • Squamous keratinized
  • Cuboidal
  • Columnar

Pseudostratified

Transitional

  • Relaxed
  • Distended (Pressed down)
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3
Q

Stratified squamous epi has underlying _______ ______.

A

Lamina propria

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4
Q

Stratified squamous epithelium lines what 4 places?

A

Oral cavity

Palate

Tongue

Alveolar bone

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5
Q

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

A

TRUE

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6
Q

What are the 2 layers of the oral mucosa?

A 
Stratified squamous epithelium
- Can be:
—Nonkeratinized
—Orthokeratinized
—Parakeratinized
Lamina propria
-CT that supports the epi
-2 layers
—Papillary - Higher
—Reticular - Lower
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7
Q

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

A

NON

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8
Q

Diff b/t ortho and para?

A

Ortho - No nuclei
-Granular cell layer

Para - Nuclei
-No granular cell layer

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9
Q

What are the stratum layers?

A

Basale

Spinosum

Granulosum

Lucidum

Corneum

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10
Q

What are three characteristics of oral mucosa?

A

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
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11
Q

What is the fx of lamina propria?

A

Mechanical support to the epi and carries blood vessels/nerves

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12
Q

Tell me more about the papillary layer.

A

Directly under epithelial layer, loose CT, more cells

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13
Q

Tell me more about the reticular layer.

A

Dense CT fibrous layer located under papillary layer

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14
Q

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

A

TRUE

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15
Q

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

A

TRUE

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16
Q

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

A

TRUE

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17
Q

Lining mucosa is what?

Masticatory is what?

Specialized is what?

A

Lining - NON-KERATINIZED

Masticatory - KERATINIZED

Specialized - KERATINIZED

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18
Q

Lining mucosa covers what structures?

A

Lips

Cheeks

Floor of mouth

Alveolar bone

Soft palate

Ventral tongue

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19
Q

Masticatory mucosa covers what?

A

Gingiva

Hard palate

20
Q

Specialized mucosa covers what?

A

Dorsal surface of the tongue

21
Q

What is the mucocutaneous junction?

A

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

22
Q

What is the vermillion border?

A

Line separating vermillion zone and skin

23
Q

What is the vermillion zone?

A

Thin, keratinized epi

Long CT papillae

Numerous capillary loops in papillae

24
Q

What is the intermediate zone?

A

B/T vermillion zone and labial mucosa

Parakeratinized stratified squamous epithelium

25
Q

What are the boundaries of the free gingival margin?

A

Gingival margin

Free gingival groove

Gingival sulcus

Vestibule

Oral cavity

26
Q

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

A

TRUE

27
Q

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

A

TRUE

28
Q

What are the boundaries of the attached gingiva?

A

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
Q

LOOK AT SLIDE 41 FOR GOOD PICTURE.

A

DO IT

30
Q

What is the interdental papilla?

A

Occupies the embrasure b/t teeth below the contact

*Kera ss epi

31
Q

What is the col?

A

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

*NONkera ss epi

32
Q

T/F - Masticatory mucosa covers the hard palate.

A

TRUE

  • Palatine or median raphe
  • Kera ss epi
33
Q

T/F - Hard palate has mucoperiosteum.

A

TRUE

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

34
Q

Specialized mucosa is where?

A

Dorsal tongue

  • Kera or nonkera
  • Taste buds
35
Q

What are the 4 papillae of the tongue?

A

Filiform

  • Most NUMEROUS
  • No taste buds

Fungiform

  • Mushroom shaped
  • Anterior tongue

Circumvallate

  • LARGEST
  • Taste buds on lateral surface

Foliate
-Posterolasteral border

36
Q

Hairy tongue is elongation of what?

A

Filiform papilla

37
Q

What is the dentogingival junction?

A

Junction b/t attached gingiva and tooth

-enamel or cementum

38
Q

What are the 2 components of the dentogingival junction?

A

Junctional epithelium

  • Floor of gingival sulcus
  • From REE

Epithelial attachment

  • The glue
  • Basal lamina-like
39
Q

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

What do rete pegs mean?

A

TRUE

*Inflammation

40
Q

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

A

TRUE

41
Q

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

A

TRUE

42
Q

Gingival and sulcular epi mature due to what?

A

Superficial, intructive influences

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

Hemidesmosomes on both surfaces of the epithelium

43
Q

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

A

TRUE

It keratinizes!

44
Q

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

A

TRUE

*These DO NOT KERATINIZE

45
Q

Proliferation of JE. Tell me.

A

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

Oral Bio Quiz 4 (4 decks)

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