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Oral Histology > Oral Mucosa > Flashcards

Oral Mucosa Flashcards

0
Q

True or false. Oral mucosa has no sweat and sebaceous glands?

A

True

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1
Q

Embryonic origin of oral mucosa?

A

Ectoderm and endoderm

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2
Q

Type of oral mucosa characterized as pliable?

A

Lining mucosa

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3
Q

Senses perceived by the oral mucosa? (4)

A
  • Temperature
  • Touch
  • Pain
  • Taste
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4
Q

Has the thinnest epithelium?

A

Floor of the mouth

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5
Q

Embryonic origin of lamina propria of oral mucosa?

A

Mesoderm

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6
Q

Mucoperiosteum is found in what type of oral mucosa?

A

Masticatory mucosa

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7
Q

Another term for lamina propria?

A

Corium

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8
Q

Layers of the lamina propria? (2)

A
  • Papillary layer
  • Reticular layer
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9
Q

Layer containing keratohyaline granules?

A

Stratum granulosum

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10
Q

Layers containing tonofibrils? (2)

A
  • Granulosum
  • Spinosum
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11
Q

Layer with intercellular bridges?

A

Spinosum

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12
Q

Layer with shiny appearance?

A

Spinosum

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13
Q

Intercellular filaments inserting into the desmosomes?

A

Tonofilaments

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14
Q

Circular or oval areas of cell membrane adhering by attachment plaque?

A

Desmosomes

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15
Q

True or false. Lining mucosa is thicker than keratinized epithelium?

A

True

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16
Q

Layers of non keratinized epithelium? (3)

A
  1. Superficiale
  2. Intermedium
  3. Basale
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17
Q

Layer with slight increase in size and accumulation of glycogen in cells of the surface layers?

A

Intermedium

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18
Q

Cells having clear halo around the nucleus (clear cells)?

A

Nonkeratinocytes

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19
Q

What are the nonkeratinocytes? (4)

A
  • Melanocytes
  • Langerhan cells
  • Merkels cells
  • Inflammatory cells
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20
Q

What non keratinocytes have no desmosomal attachment?

A

Merkels cells

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21
Q

True or false. Melanocytes varies in number among individuals?

A

False. Same number

22
Q

Color differences is caused by? (2)

A
  • Activity of melanocytes
  • Rate of melanin production
23
Q

Pigmented lesions in the oral mucosa? (3)

A
  • Oral melanotic macule
  • Nevus/mole
  • Melanoma
24
Q

Malignant proliferation of melanocytes?

A

Melanoma

25
Q

Benign proliferation of melanocytes?

A

Nevus/mole

26
Q

Cells with immune functions?

A

Langerhans cells

27
Q

Cells with sensory function?

A

Merkel cells

28
Q

Merkel cells are found in what layer?

A

Basal layer

29
Q

Characterized with stipples/interdental folds?

A

Attached gingiva

30
Q

It forms the epithelial cuff?

A

Gingiva

31
Q

Gingiva found between teeth in proximal view?

A

Interdental col

32
Q

True or false. Attached gingiva is normally smooth?

A

False

33
Q

Interface between the gingiva and the tooth?

A

Dentinogingival junction

34
Q

3 parts of the epithelial portion?

A
  • Junctional
  • Sulcular
  • Oral gingival
35
Q

Grade of keratinization:

Without nuclei?

%?

A

Orthokeratinization

20-30%

36
Q

Grade of keratinization:

Found only in the marginal gingiva?

%?

A

Incomplete parakeratinized

7-10%

37
Q

Grade of keratinization:

Has pyknotic nuclei?

%?

A

Parakeratinized

50-70%

38
Q

Supraalveolar fibers implicated in post orthodontic relapse?

A

Transseptal fibers

39
Q

Supragingival fibers inserting interdentally into the supraalveolar cementum to the free gingiva of adjacent tooth?

A

Transgingival or intergingival fibers

40
Q

Circular fibers are also called?

A

Semicircular fibers

41
Q

Supraalveolar fibers between the lingual papilla and labial papilla?

A

Interpapillary fibers

42
Q

Supraalveolar fibers connecting the circular fiber bundles of neighboring teeth?

A

Intercircular fibers

43
Q

First stage of passive eruption:

Bottom of gingival sulcus is on the _____?

Apical end of attachment at the _____?

A

Enamel

CEJ

44
Q

Second stage of passive eruption:

Bottom of gingival sulcus is on the _____?

Apical end of attachment at the _____?

A

Enamel

Cementum

45
Q

3rd stage of passive eruption:

Bottom of gingival sulcus is on the _____?

Apical end of attachment at the _____?

A

CEJ

Cementum

46
Q

4th stage of passive eruption:

Bottom of gingival sulcus is on the _____?

Apical end of attachment at the _____?

A

Cementum

Cementum

47
Q

True or false. Soft palate has taste buds?

A

True

48
Q

Type of oral mucosa where it is easier to inject anesthesia?

Why?

A

Lining mucosa

Because of the submucosal layer

49
Q

Has the thickest non keratinized mucosa?

A

Labial and buccal mucosa

50
Q

Lingual papilla except the filiform has non keratinized or keratiniez mucosa?

A

Nonkeratinized

51
Q

Linea alba is keratinized or non keratinized?

A

Keratinized

52
Q

Match:

  1. Scarlet fever: ?
  2. Measles: ?
  3. Pernicous anemia: ?
  4. Vit D deficiency: ?
A
  1. strawberry tongue
  2. koplick spots
  3. magenta and smooth tongue
  4. atrophic glossitis

Oral Histology (11 decks)

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