Oral Histology

Question 1

What is the primary epithelium of the oral cavity?

Answer 1

Nonkeratinized stratified squamous

Question 2

What are the three layers of the nonkeratinized s.s. epithelium?

Answer 2

1. Stratum superficiale
2. Stratum spinosum
3. Stratum basale

Question 3

What parts of the mouth are covered with nonkeratinized s.s. epithelium?

Answer 3

Soft palate, lips, cheeks, inferior tongue, and floor of mouth

Question 4

What parts of the mouth are covered with parakaratinized epithelium?

Answer 4

Hard palate, gingiva, dorsum of tongue (masticatory mucosa)

Question 5

What is the function of masticatory mucosa?

Answer 5

Protect from potato chips

Question 6

Which papillae are the largest?

Answer 6

Circumvallate papillae

Question 7

Which papillae are found on the lateral surface of the tongue?

Answer 7

Foliate papillae

Question 8

Are foliate papillae keratinized?

Answer 8

NO

Question 9

Which papillae on the dorsum of the tongue are highly keratinized but have no taste buds?

Answer 9

Filiform papillae

Question 10

Which papillae on the dorsum of the tongue are slightly keratinized with some taste buds?

Answer 10

Fungiform papillae

Question 11

Which papillae have the most taste buds?

Answer 11

Circumvallate

Question 12

Which papillae look spiky histologically?

Answer 12

Filiform papillae

Question 13

What part of the tooth allows for entrance of the blood vessels, nerves, and lymphatics into the pulp cavity?

Answer 13

Apical foramen

Question 14

What cells make dentin?

Answer 14

Odontoblasts

Question 15

What three glands produce 90% of the saliva in the oral cavity?

Answer 15

1. Parotid
2. Submandibular
3. Sublingual

Question 16

What are the two major cells in the salivary glands?

Answer 16

1. Serous cells

2. Mucous cells

Question 17

What cell is found in the secretory unit and accelerates secretion?

Answer 17

Myoepithelial cells

Question 18

In traditional fixation of a gland, which cells balloon out to the surface of the gland?

Answer 18

Serous cells (serous demilune)

Question 19

Which salivary gland has the longest duct?

Answer 19

Parotid

Question 20

Which salivary gland has the largest acinus?

Answer 20

Sublingual

Question 21

What type of cells does the parotid duct contain?

Answer 21

Serous only

Question 22

Which salivary ducts have both serous and mucous cells?

Answer 22

Submandibular (mostly serous) and sublingual (mostly mucous)

Question 23

In a histological section, which salivary gland would contain the most serous demilumes?

Answer 23

sublingual

Question 24

Which gland is branched acinar?

Answer 24

Parotid

Question 25

Which glands are branched tubuloacinar?

Answer 25

Submandibular and sublingual

Question 26

Infection to basal cells at the base of what tonsil structure can lead to permanent infection?

Answer 26

Tonsilar crypts