VM oral mucosa

Question 1

what type of mucosa is this?

Answer 1

masticatory mucosa

Question 2

what layer of mucosa is this?

Answer 2

keratinised layer

Question 3

what layer of mucosa is this?

Answer 3

granular layer

Question 4

what layer of mucosa is this?

Answer 4

prickle cell layer

Question 5

what layer of mucosa is this?

Answer 5

basal cell layer

Question 6

what is the cell circled red?

Answer 6

supra-basal non-keratinocyte (clear cell)

either Langerhan’s or inflammatory cell

Question 7

what is the cell circled purple?

Answer 7

basal non-keratinocyte (clear cell)

either Merkel cell or melanocyte

Question 8

where is there thicker connective tissue layer of masticatory mucosa?

Answer 8

behind wisdom tooth/last molar

Question 9

name these structures

Answer 9

rete pegs

Question 10

what does this section show?

Answer 10

twisted section, it tells us that the connective tissue projects into the epithelium not the other way round

Question 11

what is the difference between masticatory and lining mucosa under microscope?

Answer 11

Lining mucosa has alive surface layer with nuclei

Lining mucosa non-keratinised

Lining mucosa has no rete pegs, has undulating (wavy) surface

Question 12

which non-keratinocytes/clear cells are supra-basal?

Answer 12

Langerhan’s cells
inflammatory cells

Question 13

which non-keratinocytes/clear cells are basal?

Answer 13

Merkel cells
Melanocytes

Question 14

what type of mucosa is this?

Answer 14

lining mucosa

Question 15

what layer of mucosa is this?

Answer 15

superficial layer

Question 16

what layer of mucosa is this?

Answer 16

intermediate layer

Question 17

what layer of mucosa is this?

Answer 17

prickle cell layer

Question 18

what layer of mucosa is this?

Answer 18

basal cell layer

Question 19

what is the cell circled red?

Answer 19

supra-basal non-keratinocyte (clear cell)

either Langerhan’s cell or inflammatory cell

Question 20

what is the cell circled purple?

Answer 20

basal non-keratinocyte (clear cell)

either melanocyte or Merkel cell

Question 21

what type of mucosa is this?

Answer 21

lining mucosa

Question 22

what is this tissue?

Answer 22

salivary glands

Question 23

name this layer of connective tissue

Answer 23

lamina propria

Question 24

name this layer of connective tissue

Answer 24

submucosa

Question 25

where is this epithelium from in the mouth? describe its structure

Answer 25

Gingival epithelium
Tightly packed
Keratinised
Rete pegs

Question 26

where is this epithelium from in the mouth? describe its structure

Answer 26

Sulcar epithelium
Not keratinised
Flat interface - no rete pegs

Question 27

where is this epithelium from in the mouth? describe its structure

Answer 27

Junctional epithelium
Thin
Loosely packed - leaky
Flat interface

Question 28

what do the dark areas represent?

Answer 28

inflammation at the base of the sulcus

Question 29

what is this cell?

Answer 29

prickle cell

Question 30

what are these prickly extensions of the cell?

Answer 30

desmosomes

Question 31

compare the structure of gingival epithelium to junctional epithelium

Answer 31

Junctional epithelium
- Loosely packed
- Leaky - gingival crevicular fluid

gingival epithelium
- Tightly packed
- Organised

Question 32

what is this structure?

Answer 32

circumvallate papillae
- taste buds on sides

Question 33

what are these structures?

Answer 33

minor salivary glands
- von ebner salivary glands

Question 34

what is this structure?

Answer 34

foliate papillae

Question 35

what is this structure?

Answer 35

filiform papillae
- keratinised surface

Question 36

what type of mucosa is this?

Answer 36

specialised mucosa
as circumvallate papilla

Question 37

what type of mucosa is this?

Answer 37

specialised mucosa
as foliate papillae