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DDS1-histology > oral mucosa > Flashcards

oral mucosa Flashcards

1
Q

waldeyer’s ring

A

anatomical location of lymphoid tissue found posteriorly along pharyngeal wall

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2
Q

sebaceous glands

A

fordyce granules

-yellow aggregates

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3
Q

what is found in the submucosa

A
  • blood vessels
  • nerves
  • salivary and sebaceous glands
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4
Q

mucoperiosteum location

A

-gingiva and parts of the hard palate

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5
Q

what is unique about the mucoperiosteum

A

NO submucosa, which provides a firm inelastic attachment

* lamina propria attached directly to periosteum

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6
Q

lamina propria of oral mucoperiosteum

A

has sharp dense fibers, few and smaller vessels

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7
Q

2 functional populations of oral epithelium

A
  1. progenitor

2. maturing

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8
Q

progenitor pop

A

provides new cells

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9
Q

maturing pop

A

differentiation or maturation to form protective layer (ie. K or NK)

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10
Q

rate of proliferation is ____(higher or lower) in gingiva vs cheek

A

rate is higher for gingiva

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11
Q

KSSE location

A
  • masticatory mucosa

- hard palate, gingiva, dorsal part of tongue

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12
Q

NK SSE location

A
  • labial mucosa
  • buccal mucosa
  • ventral tongue
  • soft palate
  • floor of the mouth
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13
Q

describe the pathologic correlation with NK and K SSE

A

K of NK tissue can occur in response to chronic irritation or pre-cancerous conditions

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14
Q

types of cells seen in NKSSE

A
  • melanocytes
  • langerhans cells (immune)
  • merkel cell (not dentritic!)
  • inflammatory cells
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15
Q

oral pigmentation can occur in response to

A

increased melanin deposition

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16
Q

what type of collagen is seen in lamina propria

A

1 and 3

basal lamina has 4 and 6

17
Q

what type of collagen is present in inflamed tissue

A

type 5!

18
Q

what cells are present in lamina propria (LP)

A
  • fibroblasts
  • macrophages
  • mast cells
  • inflammatory cells
  • endothelial cells
19
Q

types of mucosa

A
  1. masticatory
  2. lining
  3. specialized
20
Q

what is found between the hard and soft palate

A

palatine raphe

-some submucosa present

21
Q

regions of the lip

A
  • skin
  • vermillion zone
  • intermediate zone
  • labial mucosa (buccal mucosa)
22
Q

skin

A
  • thin KSSE

- dermis, sebaceous glands, hair follicles, sweat glands

23
Q

vermillion zone

A
  • thin ORTHO KSSE
  • many narrow CT papillae
  • meissner’s corpuscles
  • no salivary glands! few sebaceous glands
24
Q

intermediate zone

A
  • thin PARA KSSE
  • long irregular CT papillae
  • submucosa has minor salivary glands and fat
25
Q

labial mucosa (buccal mucosa)

A
  • thin NKSSE
  • long CT papilla
  • dense fibrous ct
  • submucosa: dense collagenous CT, fat, minor salivary glands
26
Q

what condition is associated with ther vermillion zone

A

solar elastosis

27
Q

v shaped groove that separates the two parts of dorsal tongue

A

sulcus terminalis

28
Q

anterior 2/3 of tongue

A

-body (1 pharyngeal arch)

29
Q

posterior 1/3

A

base (3rd pharyngeal arch)

30
Q

lymphoid tissue (lingual tonsils) are found

A

posterior 1/3 of tongue

31
Q

minor salivary glands of the dorsal tongue (lamina propria) are found

A

posterior portion ONLY

32
Q

mucosa of tongue is bound to

A

CT around muscles of tongue

33
Q

the tip of the sulcus terminalis

A

foramen cecum

34
Q

types of papilla on tongue

A
  • filiform
  • fungiform
  • foliate
  • circumvallate
35
Q

filiform

A
  • most numerous (covers anterior surface)
  • ortho KSSE
  • NO TASTE BUDS
36
Q

fungiform

A
  • scattered at tip of tongue
  • NKSSE
  • taste buds
37
Q

foliate

A
  • lateral margins of posterior tongue
  • NKSSE
  • some taste buds
38
Q

circumvallate

A
  • adjacent and anterior to sulcus terminalis
  • glands of von ebner found under
  • superior surface is K, lateral is NK with taste buds
39
Q

what type of cells are found in he taste bud

A

gustatory epi cells

DDS1-histology (15 decks)

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