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Oral Sciences > 1/9 Lecture > Flashcards

1/9 Lecture Flashcards

1
Q

movable soft tissue:

A

soft palate, l and B mucosa, tongue, floor of mouth

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2
Q

Oral mucosa comprises;

A

CT, keratinized, para, and nonk SSE

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3
Q

3 types of oral mucosa:

A

lining, specialized, masticatory

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4
Q

Cell type of oral mucosa:

A

SSE, polygonal, highly approximated

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5
Q

Layers of keratinized:

A

basal, spinosum, granulosum, corneum

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6
Q

Layers of non-k

A

basal, spinosum, intermedium, suprficale

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7
Q

What are the 2 layers below basale?

A

BM, dermis

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8
Q

Layer closest to CT:

A

basale

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9
Q

Where are tissues k?

A

wherever we have friction, barrier function

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10
Q

Main cell type in epi of oral mucosa;

A

keratinocyte

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11
Q

Final stage of epi oral mucosa differentiation:

A

keratinized

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12
Q

Keratinocytes form:

A

functional barrier

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13
Q

Nucleus of keratinocyte:

A

pyknotic

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14
Q

Layer w keratohyaline:

A

Granular

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15
Q

Shape of cells of basale:

A

cuboidal, low clumnar

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16
Q

Layers to basale:

A

1 cell thick

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17
Q

basale is interface of:

A

epi and LP

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18
Q

TF? Basale is constantly renewed

A

T.

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19
Q

Shape of nucleus in basale:

A

oval, R angle to plane of epi/CT junction

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20
Q

Layers of spinosum:

A

4-5, superficial layer flattened

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21
Q

TF? Cells of spinosum do not undergo mitosis.

A

F. few mitoses

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22
Q

Origin of new epi:

A

spinosum

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23
Q

TF? spinosum cells are connected via hemi-desmosomes.

A

F. desmosomes

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24
Q

These can be seen in upper layer of spinosum:

A

membrane-coating granules

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25
Q

Function of membrane-coating granules:

A

unknown

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26
Q

spinosum is aka:

A

prickle layer

27
Q

stratum germanotum:

A

basale + spinosum

28
Q

Markers to determine the origin of a cancerous tumor

A

cytokeratin markers

29
Q

TF? granulosum is present in both k and non-k

A

F. not non-k

30
Q

Layer of granulosum

A

3-5

31
Q

Most prominent layer in k:

A

granulosum

32
Q

Cytoplasmic keratohyaline granules form:

A

matrix for keratin fibers

33
Q

TF? There are numerous cytokerating present in oral mucosa.

A

T

34
Q

Shape of nucleus, corneum:

A

no nucleus!

35
Q

Turn over of oral mucosa:

A

12-13d

36
Q

Layer w abundant k filaments:

A

corneum

37
Q

how long should it take for an ulcer to heal?

A

2w

38
Q

Is lining mucosa k or non-k?

A

non-k

39
Q

TF? Surface cells of k tissue is alive.

A

F. no nucleus

40
Q

TF? There are very few keratin filaments in non-k tissue.

A

F. none

41
Q

Layers absent in non-k tissue:

A

corneum, granulosum

42
Q

Describe the submucosa of non-k epi:

A

loosely organized, free mobility of mucosa in relation to underlying tissue

43
Q

Lining mucosa covers all surfaces of OC except:

A

gingiva, hard palate, dorsal tongue

44
Q

Function of keratin:

A

withstand frictional forces

45
Q

This binds epi to bone:

A

collagenous fibers

46
Q

TF? Collagenous fibers are thinner and less organized than lining mucosa.

A

F thicker/ more organized

47
Q

Masticatory tissue in mouth:

A

gingiva, palate

48
Q

masticatory, k or non-k?

A

k

49
Q

Nucleus of para-k surface cells:

A

dark stained

50
Q

TF? Para-k has no corneum or granulosum.

A

t

51
Q

Layers of para-k:

A

basale, spinosum, intermedium, superficiale

52
Q

Layer directly below epi:

A

LP

53
Q

Layers of LP

A

papillary, reticular

54
Q

BV that give rise t secondary plexus in papillary layer of LP:

A

BV is submucosa

55
Q

TF?> Epi is vascular.

A

F. avascular

56
Q

Submucosa is below this layer if present:

A

reticular

57
Q

Location of secondary plexus:

A

Papillary layer (LP)

58
Q

Blood supply for LP

A

submucosa

59
Q

Are there lymphocytes in the CT?

A

yes

60
Q

TF? Submucosa is present in most of the OC:

A

F. absent or limited in most of OC

61
Q

Fxn of submucosa:

A

attaches to LP to bone/muscle

62
Q

Submucosa contains:

A

BV’s, nn., lymphatics

63
Q

Functions of submucosa:

A

nutrition, defense

64
Q

What does LP attach to if there is no submucosa?

A

directly to bone (mucoperiosteum)

Oral Sciences (16 decks)

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