Deck 9: Oral Mucosa

Question 1

Which of the following layers of nonkeratinized stratified squamous epithelium produces the basal lamina of the basement membrane within the oral mucosa?

A) Basal layer
B) Intermediate layer
C) Superficial layer
D) Prickle layer

Answer 1

Basal layer

Question 2

When viewing the oral mucosa of the floor of the mouth through a microscope,which of the following can be noted?

A) Thick epithelial layers
B) Narrow connective tissue papillae
C) Extensive vascular supply
D) Keratinized epithelium

Answer 2

Extensive vascular supply

Question 3

In a young adult,the buccal mucosa may contain Fordyce spots,which refer to:

A) salivary gland tissue trapped in the lamina propria.
B) deposits of sebum from misplaced sebaceous gland tissue.
C) hyperkeratinized areas from localized tissue trauma.
D) remnants of tonsillar tissue misplaced in the epithelium.

Answer 3

deposits of sebum from misplaced sebaceous gland tissue.

Question 4

The mucogingival junction is absent from which of the following oral surfaces?

A) Buccal surface of the maxillary arch
B) Palatal surface of the maxillary arch
C) Facial surface of the mandibular arch
D) Lingual surface of the mandibular arch

Question 5

Where are the taste buds located within the circumvallate lingual papillae on the dorsal surface of the tongue?

A) None are present within the epithelium.
B) Hundreds are surrounding the entire base.
C) The are on the lateral parts of structure.
D) A variable number can be found in the most superficial part.

Question 6

What type of tissue makes up the bulk of the lamina propria of the oral mucosa?

A) Connective tissue
B) Muscle tissue
C) Nerve tissue
D) Epithelium

Question 7

Both the attached gingiva and buccal mucosa are mainly pinkish in color and not reddish due to the:

A) vascularity of the lamina propria.
B) closeness to bone tissue.
C) decreased number of melanocytes.
D) increased thickness of the epithelial layers.

Question 8

Which of the following is considered correct regarding hyperkeratinization of the oral mucosa?

A) It commonly occurs on buccal mucosa with the linea alba.
B) It is associated with chronic freezing of the tissue.
C) It is a response to frictional but not chemical trauma.
D) Changes are reversible even if the source of the injury is not removed.

Question 9

In the oral cavity,masticatory mucosa always contains a(n):

A) keratin layer without nuclei.
B) distinct granular layer.
C) prickle layer.
D) underlying submucosa.

Question 10

Which lingual papillae are found in lesser numbers on the body of the dorsal surface of the tongue?

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

Question 11

Which of the following statements concerning pigmentation in the oral cavity is correct?

A) Melanin is formed by epithelial basal cells.
B) Pigmentation is most noticeable in the alveolar mucosa.
C) The number of melanocytes differs according to clinical appearances.
D) Clinical levels of pigmentation are controlled by genetic programming.

Question 12

Melanin pigment for the oral cavity is synthesized in which of the following cells?

A) Melanocytes
B) Melanosomes
C) Keratinocytes
D) Nonkeratinocytes

Question 13

What is the most common cell in the lamina propria of oral mucosa?

A) Mast cell
B) Fibroblast
C) Macrophages
D) Lymphocytes

Question 14

Keratohyalin granules are located in which of the following epithelial layers in the oral cavity?

A) Stratum spinosum
B) Stratum granulosum
C) Stratum corneum
D) Stratum basale

Question 15

Which of the following layers make up the bulk of nonkeratinized epithelium in the oral cavity?

A) Basal layer
B) Intermediate layer
C) Superficial layer
D) Prickle layer

Question 16

Which of the following areas of the oral cavity is categorized as a lining mucosa?

A) Attached gingiva
B) Hard palate
C) Dorsal tongue surface
D) Soft palate

Question 17

Which is the most superficial layer of the lamina propria of oral mucosa?

A) Dense layer
B) Capillary plexus
C) Submucosa
D) Papillary layer

Question 18

The attached gingiva of the oral cavity consists of which type of oral mucosa?

A) Alveolar mucosa
B) Masticatory mucosa
C) Specialized mucosa
D) Lining mucosa

Question 19

Which of the following lingual papillae are involved in the normal variation of geographic tongue?

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

Question 20

The basal layer of oral mucosa in the oral cavity generally has:

A) columnar-shaped cells.
B) two cell layers.
C) cells undergoing mitosis.
D) keratin being produced.

Question 21

Which of the following statements concerning granulation tissue formation during the repair process in the oral mucosa is correct?

A) Has more fibers in the lamina propria
B) Has a decreased number of blood vessels
C) Appears as a hard, dark red dried scab
D) Is later replaced by firmer and paler scar tissue

Question 22

Which of the following regions in the oral cavity has the lowest turnover times?

A) Hard palate
B) Floor of the mouth
C) Buccal and labial mucosa
D) Attached gingiva

Question 23

What is one difference in the repair process of the oral mucosa as compared to that of the skin?

A) Dry scab is present.
B) Clot stays moist over time.
C) Inflammatory response is triggered.
D) Fibroblasts migrate to produce immature connective tissue.

Question 24

Which of the following changes can occur in the oral mucosa as it ages?

A) Increase in rete ridges in epithelium
B) Increase in lingual papillae on the dorsal tongue surface
C) Decrease in taste buds with the lingual papillae
D) Decrease in lingual veins on the ventral surface of the tongue

Question 25

Which of the following lingual papillae are involved in the lesion of black hairy tongue?

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