L1: Oral Mucosa

Question 1

Functions of Oral mucosa

Answer 1

Protective (barrier against micro-organism)
Sensory (lingual receptors, vomiting reflex)
Secretory (saliva)

Question 2

Types of oral mucosa

Answer 2

• External or transitional labial mucosa
• Masticatory mucosa
• Lining mucosa
• Specialized mucosa

Question 3

What type of mucosa can be found in the gingiva

Answer 3

Masticatory mucosa

Question 4

What type of mucosa can be found in the hard palate

Answer 4

Masticatory mucosa

Question 5

What type of mucosa can be found in the lip

Answer 5

Lining mucosa

Question 6

What type of mucosa can be found in the cheeks

Answer 6

Lining mucosa

Question 7

What type of mucosa can be found in the floor of the mouth

Answer 7

Lining mucosa

Question 8

What type of mucosa can be found in the soft palate

Answer 8

Lining mucosa

Question 9

What type of mucosa can be found in the inferior surface of the tongue?

Answer 9

Lining mucosa

Question 10

What type of mucosa can be found in the dorsal surface of the tongue?

Answer 10

Specialized mucosa

Question 11

Masticatory mucosa is keratinized or non keratinized?

Answer 11

Keratinized

Question 12

Lining mucosa is keratinized or non-keratinized?

Answer 12

Non-keratinized

Question 13

External or transitional labial mucosa is keratinize or non-keratinized?

Answer 13

Keratinized

Question 14

Tissue component of the oral mucosa

Answer 14

Stratified squamous epithelium
Basal membrane
Connective tissue, chorion, lamina propria
Submucosa
Periosteum bone

Question 15

What type of epithelium is found in the oral mucosa

Answer 15

Stratified squamous epithelium

Question 16

Main cells found in the epithelium

Answer 16

Keratinocyte

Question 17

Is there blood vessels or never in epithelium

Answer 17

No, only non-myelinated terminations

Question 18

Layers of keratinized epithelium tissue

Answer 18

Corneum layer
Granular layer
Spinosum layer (prickle cell layer )
Basal layer

Question 19

Non-keratinized epithelial tissue

Answer 19

Superficial layer
Intermediate layer
Spinosm
Basal

Question 20

Cells of epithelium

Answer 20

Melanocytes
Langerhans cells
Intermediate cells
Merkel cells
Leukocyte

Question 21

Cellular unions

Answer 21

Desmosome
Hemidesmosome

Question 22

What is Desmosome

Answer 22

Specialized cell to cell adhesion

Question 23

What is hemidesmosome?

Answer 23

Adhesion to basement membrane

Question 24

2 layers of basal lamina

Answer 24

Lamina lucida
Lamina densa

Question 25

Anchorage of lamina lucida

Answer 25

Laminin will help to anchor to epithelial cells

Question 26

Anchorage of lamina densa

Answer 26

Fibronectin will help to anchor to the collagen fibrils

Question 27

Basement membrane components

Answer 27

Type IV collagen Fironectin Laminin Perclecan Looping fibrils of type VII

Question 28

Connective tissue layers

Answer 28

Superficial or papillary Deep reticular

Question 29

Cells in the connective tissue

Answer 29

Fibroblast Macrophages Leukocytes Mast cells Stem cells Vessels Nerve Ground substance

Question 30

What is extracellular matrix (ECM)?

Answer 30

Ground substance (hyaluronic acid, proteins, proteoglycans)+ Fibers (collagen, elastin, reticulin)

Question 31

Structures found in the connective tissue?

Answer 31

Minor salivary glands Sebaceous glands

Question 32

Connective tissue functions

Answer 32

Mechanical support and nutritions for the epithelium