PPT 5 Oral Cavity Epithelia

Question 1

The most abundant cells in the epithelium that contain keratin are called ______.

Answer 1

keratinocytes

Question 2

Pigment cells in the basal layer are called _____.

Answer 2

melanocytes

Question 3

bone marrow derived cells in the epidermis that can migrate in to the dermis to present antigens to the T lymphocytes are called ______. Also called dendritic cells.

Answer 3

Langerhans cells

Question 4

Also called tactile cells, ________ cells are modified epidermal cells that contact sensory neurons to form a sensitive mechanoreceptor.

Answer 4

Merkel’s

Question 5

The five cell layers of the epidermis from surface to deepest are:

Answer 5

Stratum corneum
Stratum lucidum
Stratum granulosum
Stratum spinosum
Stratum basale

Question 6

The muscle inside the lips is called the _______.

Answer 6

Orbicularis oris

Question 7

Thin keratinized skin on the lip without hair or glands is called the _______.

Answer 7

vermillion border or vermillion zone

Question 8

nonkeratinized or regionally parakeratinized epithelium with glands on the inner side of the lip is called the ______.

Answer 8

Oral mucosa

Question 9

Epithelium with nucleated cells from the basal layer all the way to the surface is classified as ________.

Answer 9

nonkeratinized

Question 10

epithelium with some dead surface cells but most surface cells have dark and shrunken nuclei is classified as _____.

Answer 10

parakeratinized

Question 11

The dark, shrunken nuclei in parakeratinized epithelium are referred to as ______.

Answer 11

pyknotic

Question 12

What are the 3 layers of mucosa?

Answer 12

epithelium
Lamina propria
Muscularis mucosae

Question 13

Unlike most mucosa, the oral mucosa has no ______.

Answer 13

muscularis mucosae

Question 14

What are the 3 types of oral cavity mucosae?

Answer 14

Lining mucosa
Masticatory mucosa
Specialized mucosa

Question 15

A down growth of oral epithelia is called a _____.

Answer 15

rete ridge

Question 16

Masticatory mucosa is found in the ______ and ______.

Answer 16

gingiva and hard palate.

Question 17

Keratinocytes of the masticatory mucosa are differentiated into 4 layers of cells called:

Answer 17

stratum basale
stratum spinosum
stratum granulosum
stratum corneum

Question 18

Clusters of yellowish sebaceous glands in the oral mucosa are called _____.

Answer 18

Fordyce’s granules

Question 19

The gingiva connected to the alveolar bone is called _____.

Answer 19

Attached gingiva

Question 20

The apex of the free gingiva over the crest of the alveolus is called _____.

Answer 20

gingival margin

Question 21

The _____ lines the gingival sulcus of the gingiva which is the crevice above the epithelial attachment.

Answer 21

sulcular epithelium

Question 22

The junctional epithelium has 2 basal laminae. The spot where the junctional epithelium adheres to the tooth surface is called the _____.

Answer 22

epithelial attachment

Question 23

The epithelial attachment (also called _______) is to the _____ in children but with gingival recession, can be to the _____.

Answer 23

Gottlieb’s attachment, enamel, cementum

Question 24

Melanocytes produce and transfer melanin pigment granules (melanosomes) to adjacent keratinocytes by a process called ______.

Answer 24

cytocrine injection

Question 25

What type of mucosa lines the dorsal side of the tongue?

Answer 25

Specialized mucosa