Exam 3

Question 1

What are the three main functions of mucous membranes?

Answer 1

1. Absorption
2. Excretion
3. Protection

Question 2

What are the masticatory (keratinized) mucosa?

Answer 2

• gingiva

- hard palate

Question 3

What are the lining (non-keratinized) mucosa?

Alcohol By Volume? F*****g Sick

Answer 3

• alveolar
• buccal
• ventral surface of tongue
• floor of mouth
• soft palate

Question 4

Specialized mucosa

Answer 4

-dorsal surface of tongue (taste buds)

Question 5

What are the 4 layers of the mucous membranes?

Answer 5

• Epithelium
• Lamina propria
• Submucosa
• Periosteum

Question 6

What is the mucous membrane called that is missing the submucosal layer?

Answer 6

-mucoperiosteum

Question 7

Which tongue papilla has lymphoid tissue?

Answer 7

-foliate

Question 8

What lesion has foamy histiocytes and typically is caused by trauma?

Answer 8

Mucoceole

Question 9

What are von ebner glands?

Answer 9

-salivary glands associated with the circumvalate papilllae that secrete pure serous secretions to clear out taste buds to continue tasting.

Question 10

Why might a tooth become ankylosed?

Answer 10

-trauma that destroys the PDL so only osteoblasts are available to head the damaged site.

Question 11

What part of the palate is the “glandular zone”?

Answer 11

-posterior 1/2

Question 12

What structure helps hold the epithelial layer to the connective tissue layer in mucous membranes?

Answer 12

Epithelial Rete Pegs

Question 13

What is parakeratosis?

Answer 13

retention of pyknotic nuclei in the stratum corneum

Question 14

What is hyperkeratosis?

Answer 14

abnormal thickening of the stratum corneum

Question 15

What is dyskeratosis?

Answer 15

abnormal keratinization below the level of the stratum corneum. (within granulosum or spinosum)

Question 16

Acanthosis

Answer 16

hyperplasia (more cells) of epithelial layer

Question 17

acantholysis

Answer 17

loss of intercellular attachments between epithelial cells

Question 18

Metaplasia

Answer 18

reversible switch from one adult cell type to another (like columnar to squamous in respiratory tract in smokers)

Question 19

Dysplasia

Answer 19

disorderly growth by non-neoplastic growth of tissue (characterized by pleomorphism, hyperchromatism, loss of normal spatial org)

Question 20

What cell has dendritic morphology and is located in the stratum spinosum (not basale?

Answer 20

Langerhans cells (is an antigen trap)

Question 21

What cell has a rounded morph and is located in the stratum basale?

Answer 21

Merkel’s Cells

Question 22

What cells has rounded morph and is located in the basale AND and spinosum?

Answer 22

Lymphocytes

Question 23

The basement membrane is made up of what?

Answer 23

Basal Lamina (lamina lucida and lamina densa) + lamina reticularis

Question 24

What are the two key components of the lamina lucida in the basal lamina>

Answer 24

• bullous pemphigoid antigen

- Type VII collagen

Question 25

What are the two key components of the lamina densa in the basal lamina?

Answer 25

• Type IV collagen

- Type VII collagen

Question 26

What is the resident cell pop of the lamina propria?

Answer 26

• fibroblast
• monocyte
• basophil
• plasma cell
• endothelial cell

Question 27

What do Mast Cells do?

Answer 27

secrete inflammatory mediators like histamine and heparin

Question 28

What do plasma cells do?

Answer 28

synthesis of immunoglobulins

Question 29

What do neutrophils do?

Answer 29

phagocytic cell that neutralizes antigens

Question 30

Taste Sensation for the Anterior 2/3 of tongue supplied by the…

Answer 30

Facial Nerve CN VII

Question 31

Taste sensation for the posterior 1/3 of the tongue supplied by the…

Answer 31

Glossopharyngeal Nerve CN IX

Question 32

Innervation for the soft palate is supplied by the….

Answer 32

facial nerve

Question 33

Innervation for the walls of the pharynx and epiglottis is supplied by the…

Answer 33

vagus nerve CN X

Question 34

What characteristic does lichen planus have?

Answer 34

T-lymphocyte and langerhans cell hyperplasia infiltration

Question 35

What is benign inflammation and desquamation of the epithelial layer?

Answer 35

geographic tongue

Question 36

Can leukoplakia be scraped off?

Answer 36

No

Question 37

What is notable about leukoplakia?

Answer 37

It is considered precancerous

Question 38

Most common site for oral squamous cell carcinoma?

Answer 38

posterior and lateral portion of tongue Male gender bias (3:1)

Question 39

keratin pearls and invasive islands of malignant squamous epithelial cells are signs of…

Answer 39

squamous cell carcinoma

Question 40

What is mucosal pemphigoid?

Answer 40

Accumulation of IgG and C3 along the basement membrane that causes separation of basement membrane layers since pemphigoid adhesion antigen is found in the lamina lucida. Female biased (2:1)

Question 41

What is the Nikolsky sign?

Answer 41

Sign for pemphogoid where mucous membrane separates with light force

Question 42

Condition where structures of ectodermal origin do not develop. What are these structures?

Answer 42

Ectodermal dysplasia: hair, eyebrows, eye lashes, teeth, sweat glands

Question 43

What is a peripheral ossifying fibroma? Cancerous? What does it look like histologically/

Answer 43

-maturation of pyogenic granuloma. Thought to be reactive not neoplastic so not cancerous. gingival mass with islands of calcified material (from periosteum)