Deck 14: Oral Mucosa

Question 1

Melanocytes inject the pigment melanin into neighboring ___________.

A) leukocytes
B) lymphocytes
C) keratinocytes
D) nonkeratinocytes

Answer 1

C

Question 2

____________ inject melanosomes into the basal cells of the gingival epithelium.

A) Melanocytes
B) Lymphocytes
C) Merkel cells
D) Langerhans cells

Answer 2

A

Question 3

The oral epithelium of an older individual is ____________.

A) thin
B) moist
C) resilient
D) texturized

Answer 3

A

Question 4

Organize the layers of masticatory mucosa from the most superficial layer to the most internal.

A) Stratum corneum,stratum granulosum,stratum spinosum,basal lamina
B) Stratum spinosum,basal lamina,stratum corneum,stratum granulosum
C) Basal lamina,stratum spinosum,stratum granulosum,stratum corneum
D) Stratum granulosum,stratum corneum,basal lamina,stratum spinosum

Question 5

Ectopic sebaceous glands on the mucosa at the angle of the mouth are called

A) rugae.
B) Fordyce spots.
C) Merkel cells.
D) Macula adherens

Question 6

Epithelial nonkeratinocytes are also known as

A) junctional epithelium.
B) clear cells.
C) fungiform papillae.
D) von Ebner glands.

Question 7

Which papillae lie in a V-shaped sulcus between the base and body of the tongue?

A) Foliate
B) Filiform
C) Fungiform
D) Circumvallate

Question 8

Lymphocytes,leukocytes,and mast cells are associated with ______________.

A) health
B) halitosis
C) necrosis
D) inflammation

Question 9

Oval or polygonal cells differentiate which layer of mucosa?

A) Basal lamina
B) Stratum corneum
C) Stratum spinosum
D) Stratum granulosum

Question 10

Masticatory mucosa is found on the ____________.

A) lips
B) soft palate
C) alveolar ridges
D) surface of the tongue

Question 11

Lining mucosa covers which structure?

A) Hard palate
B) Alveolar ridges
C) Floor of the mouth
D) Surface of the tongue

Question 12

Lymphocytes,leukocytes,and mast cells may be located anywhere in the gingiva,but most often underlie in the

A) free marginal gingiva.
B) hard palate.
C) junctional epithelium.
D) interdental papilla and col.

Question 13

Which papillae do not house taste buds?

A) Foliate
B) Filiform
C) Fungiform
D) Circumvallate

Question 14

Nonkeratinocytes constitute about ______ of the mucosal cell population.

A) 5%
B) 10%
C) 20%
D) 50%

Question 15

Which of the following is characterized by thin,nonkeratinized epithelium?

A) Free gingiva
B) Median raphe
C) Interdental col
D) Filiform papillae

Question 16

Oral nerve endings are most highly concentrated ________ of the oral cavity.

A) on the roof
B) on the floor
C) in the anterior regions
D) in the posterior regions

Question 17

Which of the following best describes the shape of the col between the anterior teeth?

A) Flat
B) Concave
C) Sharp peak
D) Slightly convex

Question 18

The lamina propria consists of which two layers?

A) Granular and surface
B) Papillary and reticular
C) Basal and intermediate stratum
D) Hemidesmosomes and stratum granulosum

Question 19

Which of the following best defines hemidesmosomes?

A) Discoid cells anchored by tonofibrils
B) Sebaceous glands located at the angles of the mouth
C) Minute disks that attach basal cells to the basal lamina
D) Cuboidal cells providing a basal layer for lining mucosa

Question 20

Cellular activity __________ and fibrosis __________ with age.

A) decreases;increases
B) increases;decreases
C) plateaus;increases
D) decreases;plateaus

Question 21

Fungiform is one of the four types of papillae found on the tongue.

Question 22

Taste buds are derived from the surrounding epithelium and are not associated with nerve endings of the tongue.

Question 23

As oral mucosa ages,it appears less moist.

Question 24

Ectopic sebaceous glands at the angle of the mouth are called fordyce spots.

Question 25

Cellular activity in oral mucosa decreases as a result of aging.

Question 26

Eleidin,a transparent protein,is found in the vermillion border of the lips.

Question 27

Which type of papilla do not contain taste buds?

A) Filiform
B) Fungiform
C) Circumvallate
D) Foliate

Question 28

The three types of nonkeratinized cells are Langerhans,Merkel,and Fordyce.

Question 29

Merkel cells function as receptors for

A) pain.
B) temperature.
C) touch and pressure.
D) deep pressure.

Question 30

Nonkeratinocytes are also known as clear cells.

Question 31

Von Ebner glands are serous salivary glands with ducts that empty into the trough surrounding the foliate papillae.

Question 32

Which type of taste sensation is recognized by taste buds throughout the oral cavity and activation by glutamate?

A) Sweet
B) Sour
C) Bitter
D) Umami

Question 33

Umami is one of the five taste modalities of the oral cavity.

Question 34

Lymphocytes and leukocytes appear most often beneath the junctional epithelium.

Question 35

Langerhans cells are restricted to the stratum spinosum.

Question 36

Rugae of the hard palate are ridges of tissue that function during mastication.

Question 37

During inflammation,lymphocytes and leukocytes can migrate into the gingival epithelium.

Question 38

All epithelial cells function with desmosomes.

Question 39

Hemidesmosomes attach the lamina propria to the stratum basal.

Question 40

Which of the following changes in mucosa are recognized as a result of the aging process?

A) Smoother
B) More moist
C) Increased cellular activity
D) Decreased fibrosis

Question 41

Merkel cells function as smell and pressure receptors.