Oral Mucosa

Question 1

What are two layers that cover all oral surfaces except teeth?

Answer 1

1-Stratified squamous epithelium (keratinized, non keratinized)
2-Lamia propria (CT supporting epithelium, Papillary and reticular layers)

Question 2

What are the 4 cell layers of keratinized epithelium?

Answer 2

1-Stratum Corneum
2-Stratum granulosum
3-Stratum spinosum
4-Stratum basale

Question 3

Which type of keratinized tissue does not really have a granular cell layer?

Answer 3

Parakeratinized

Question 4

Deeply stained granules in cytoplasm of cells in granular layer are called what?

Answer 4

Keratohyaline granules

Question 5

Which layer of the lamina propria is directly under epithelia layer is loose CT and has more cells?

Answer 5

Papillary layer

Question 6

Which layer of the lamina propria is a dense CT fibrous layer located under papillary layer?

Answer 6

Reticular layer

Question 7

Where is the mucosa the thinnest in the oral cavity?

Answer 7

Sublingual

Question 8

What structure holds cells to the basal lamina?

Answer 8

Hemidesmosomes

Question 9

What structure holds cells to cells?

Answer 9

Desmosomes

Question 10

lips, cheeks, floor of mouth, alveolar bone, soft palate and ventral tongue are all examples of what classification of oral mucosa?

Answer 10

Lining mucosa (Non-keratinized)

Question 11

Gingiva and hard palate are examples of what classification of oral mucosa?

Answer 11

Masticatory mucosa (keratinized)

Question 12

Dorsal surface of the tongue is an example of what classification of oral mucosa?

Answer 12

Specialized mucosa (typically keratinized-taste)

Question 13

The line separating the vermillion zone and skin is called what?

Answer 13

Vermillion border

Question 14

Thin, keratinized epithelium with long CT papillae and numerous capillary loops in the papillae are typical of what zone?

Answer 14

Vermilion zone

Question 15

The zone between the vermillion zone and labial mucosa is parakeratinized stratified squamous epithelium and is called what?

Answer 15

Intermediate zone

Question 16

The epithelium lining the gingival sulcus is non keratinized and called what?

Answer 16

Sulcular epithelium

Question 17

Keratinized stratified squamous epithelium occupying the embrasure between teeth is called what?

Answer 17

Interdental papilla

Question 18

Nonkeratinized stratified squamous epithelium that is concave between peaks of the interdental papillae just below the contact area are called what?

Answer 18

Col

Question 19

Which type of papillae on the tongue is most numerous, cover entire dorsal tongue and has no taste buds?

Answer 19

Filiform

Question 20

Which papillae on the tongue is mushroom shaped, scattered over anterior tongue, and has taste buds on dorsal surface?

Answer 20

Fungiform

Question 21

Which type of papillae on the tongue are the largest in size, located along sulcus terminalis, surrounded by a trench and have taste buds on lateral surface?

Answer 21

Circumvallate papilla

Question 22

Which type of papillae on the tongue are located on the posterolateral border, are in parallel ridges with furrows and have fast buds within the furrows?

Answer 22

Foliate

Question 23

What structure should not be present in a healthy sulcus?

Answer 23

Rete pegs

*they are indicative of inflammation