(E1) 2 - Oral Cavity Overview

Question 1

______ is the gateway to the GI tract and respiratory system.

Answer 1

Oral cavity

Question 2

Basic Functions of the Oral Cavity

Answer 2

Question 3

What are the three types of oral mucosa?

Answer 3

Question 4

The oral cavity is divided into two parts. What are they

Answer 4

• Oral vestibule
• Oral cavity proper

Question 5

The _____ begins as an ectodermal depression, represents the future oral cavity/mouth

Answer 5

Stomodeum

Question 6

What is hypekeratosis?

Answer 6

Question 7

__________- develops as part of the pharyngeal tube and arises predominantly from PA 2,3,4

Answer 7

Oropharynx

Question 8

What is the vestibular lamina? (labiogingival)

Answer 8

Question 9

What is the stomodeum surrounded by?

Answer 9

Question 10

What is the oral vestibule?

Answer 10

Slit-like spaces between the teeth and gingiva (gums) and the lips and cheers.

Question 11

What are the boundaries of the oral vestibule?

Answer 11

Question 12

What are the functions of the oral vestibule?

Answer 12

Question 13

What are the contents of the oral vestibule?

Answer 13

Question 14

What are the named mucosal features in the oral vestibule?

Answer 14

Question 15

Image of Oral Vestibule

Answer 15

Question 16

What is the oral cavity proper?

Answer 16

Space between the upper and lower dental arches.

Question 17

Boundaries: Oral Cavity Proper

Answer 17

Question 18

Functions: Oral Cavity Proper

Answer 18

Question 19

Contents: Oral Cavity Proper

Answer 19

Question 20

What is the Oropharynx?

Answer 20

Question 21

Function: Oropharynx

Answer 21

Question 22

Boundaries: Oropharynx

Answer 22

Question 23

Contents: Oropharynx

Answer 23

Question 24

What is the oral mucosa?

Answer 24

A mucous membrane is a moist lining of the
nasal cavity, oral cavity, and other passageways

Question 25

What composes mucosa?

Answer 25

Epithelium + Lamina Propria

Question 26

Oral mucosa may be derived from ________

Answer 26

ectoderm or endoderm depending on the location

Question 27

Oral mucosa extends from _______ to the __________

Answer 27

lips to the oropharynx

Question 28

Describe the epithelium components of the Oral Mucosa. - Types, Turnover, and Function

Answer 28

Question 29

Describe the Lamina Propria of the Oral Mucosa - Function and Composition

Answer 29

Question 30

Describe the submucosa of the oral mucosa (may be absent) - Contents, function, composition

Answer 30

Question 31

What is the mucoperiosteum?

Answer 31

Region where submucosa is absent and lamina propria attaches directly to the periosteum of the bone.

Question 32

Where do you find bone or muscle in the oral mucosa?

Answer 32

Deep to the submucosa or LP when submucosa is absent. (deepest layer)

Question 33

Describe SSNK in the Oral Mucosa

Answer 33

Question 34

Describe SSPK in the Oral Mucosa

Answer 34

Question 35

Describe SSK in the Oral Mucosa

Answer 35

Question 36

Where is the lining mucosa found?

Answer 36

Found on the lips, cheeks, alveolar mucosal surface, floor of the mouth, inferior surfaces of the tongue and soft palate At these sites, it covers striated muscle, bone and glands

Question 37

What epithelium makes up the lining mucosa?

Answer 37

* Stratified squamous non-keratinized (SSNK)

Question 38

Describe the LP and Submucosa of the lining mucosa.

Answer 38

* Lamina propria: less numerous and shallow CT papilla; high amount of elastic fibers * Submucosa is bound to muscle, also contains minor salivary glands

Question 39

What is present in the lining mucosa?

Answer 39

Shallow epidermal (rete) ridges and CT papilla interface

Question 40

Describe the result composition of the lining mucosa.

Answer 40

Result is soft , pliable and flexible in order to adjust to movement of underlying muscle (submucosa and rete ridge: CT papilla interface)

Question 41

Where do you find masticatory mucosa epithelium?

Answer 41

Found on the hard palate (anterior and posterior) and gingiva (free and attached)

Question 42

Describe the layers the make up the masticatory mucosa epithelium.

Answer 42

Question 43

Describe the result of the composition of the masticatory mucosa epithelium.

Answer 43

Question 44

What is specialized mucosa?

Answer 44

Question 45

What are the layers that make up specialized mucosa?

Answer 45

Question 46

% Breakdown of Types of Mucosa

Answer 46

60% Lining Mucosa 30% Masticatory Mucosa Epithelium 10% Specialized Mucosa