Chapter 23

Question 1

The lining of the oral cavity is referred to as what?

Answer 1

Oral Mucosa or Oral Mucous Membrane

Question 2

What type of epithelial is the oral mucous membrane?

Answer 2

Stratified Squamous Epithelial arrangement that runs from the margins of the lips posteriorly to the area of the tonsils.

Question 3

What is the area behind the tonsils and in the posterior throat wall referred to as?

Answer 3

The Pharyngeal Mucosa

Question 4

What are the three categories of mucosa within the oral cavity?

Answer 4

1. Specialized Mucosa
2. Masticatory Mucosa
3. Lining Mucosa

Question 5

Where can you find the specialized mucosa?

Answer 5

on the upper surface or dorsum of the tongue.

Question 6

Where can you find the Masticatory Mucosa?

Answer 6

It comprises the gingiva and hard palatal tissue; It undergoes trauma or compression during mastication.

Question 7

Where can you find the Lining Mucosa?

Answer 7

All other areas of the oral mucosa.

Question 8

What are the characteristics of stratified squamous epithelium?

Answer 8

• Keratinized
• Parakeratinized
• Nonkeratinized

Question 9

Keratinized Stratified Squamous Epithelium

Answer 9

On its surface are layers of dead cells without nuclei. Generally called the stratum corneum.

Question 10

Parakeratinized Stratified Epithelium

Answer 10

On its surface are some dead cells without nuclei and some apparently dying cells with slightly shriveled nuclei.

Question 11

Nonkeratinized Stratified Epithelium

Answer 11

Cells on the surface all tend to have nuclei that appear fairly healthy and normal.

Question 12

What type of stratified squamous cells make up the Lining Mucosa?

Answer 12

Nonkeratinized and Parakeritanized and is movable.

Question 13

What makes up the Lining Mucosa?

Answer 13

The mucosa of the cheeks, lips, soft palate, floor of the mouth beneath the tongue, undersurface or ventral surface of the tongue and the alveolar mucosa.

Question 14

What makes up the Masticatory Mucosa?

Answer 14

The Gingiva and Hard Palate

Question 15

What two regions is the gingiva divided into?

Answer 15

1. Free Gingiva (marginal gingiva)

2. Attached Gingiva

Question 16

The two regions of gingiva combine to form what?

Answer 16

The peak of gingiva that extends coronally between the teeth, known as the Interdental Papilla.

Question 17

What is the function of the Interdental Papilla?

Answer 17

To prevent food from impacting interproxiamally beneath the contact are of the teeth.

Question 18

The part of the interdental papilla that is apical to the contact area and connects the facial and lingual interdental papilla is known as what?

Answer 18

The col

Question 19

What is the very shallow groove around the tooth known as?

Answer 19

The Sulcus

Question 20

What is the average depth of the sulcus measured with a periodontal probe?

Answer 20

2mm-3mm

Question 21

What epithelium lines the sulcus?

Answer 21

Stratified Squamous

Question 22

At the bottom of the sulcus the epithelium is continuous with the cells that attaches to the tooth, this is known as what?

Answer 22

Attachment Epithelium (Junctional Epithelium)

Question 23

What happens to the sulcus with periodontal disease?

Answer 23

It deepens because of the boneless

Question 24

What is the Free Gingival Groove?

Answer 24

The shallow groove on the gingival surface that corresponds to its depth.

Question 25

What does the interdental papilla do when it is healthy?

Answer 25

It fills the between the teeth to keep food from lodging

Question 26

Attached Gingiva

Answer 26

Tightly attached to the underlying connective tissue and bone.

Question 27

When the attached gingiva is healthy what does it look like?

Answer 27

Stippled or dimpled appearance.

Question 28

What is Rete Pegs?

Answer 28

The Stippling look that look like an orange peel.

Question 29

In periodontal disease, what is the first sign of of gingival problems?

Answer 29

Loss of stippling due to edema.

Question 30

What is the normal color of the gingiva?

Answer 30

Pink

Question 31

What might diseased gingiva look like?

Answer 31

Reddish, whitish, may have ulcerations or outgrowths of the mucosa.

Question 32

Why is there a loss of stippling where the attached gingiva meets the alveolar mucosa?

Answer 32

Because the epithelium is not attached tightly to the bone.

Question 33

What mucosa in the oral cavity is the thickest most likely to be keratinized?

Answer 33

The Palatal Mucosa

Question 34

What is the Alveolar Mucosa?

Answer 34

Runs from the gingiva to the area of the mucobuccal or mucolabial fold.

Question 35

What is the Buccal Mucosa?

Answer 35

The mucosa of the cheek, it is constantly traumatized by chewing.

Question 36

When the buccal mucosa become thickened and keratinized in a line corresponding to the occlusal surfaces of the teeth is called what?

Answer 36

Linea Alba

Question 37

What is the Labial Mucosa?

Answer 37

Can have trauma to the lip that can cause some thickening .

Question 38

At the Labial Mucosa, trauma more frequently happens to a minor salivary gland that causes a blisterlike lesion known as what?

Answer 38

Mucocele

Question 39

What can happen when the mucosa of the soft palate falls blocking the throat?

Answer 39

Sleep apnea

Question 40

How is the epithelium like at the sublingual gingiva and ventral surface of the tongue?

Answer 40

Very Thin

Question 41

What is the Submucosa?

Answer 41

• The connective tissue beneath the mucosa that contains blood vessels and nerves and also helps determine the mobility of the mucosa by the length of its connective tissue ridges and pegs.
• Not present in all areas of the mouth

Question 42

What does the Submucosa look like when it is present?

Answer 42

It contains fatty tissue or a minor salivary gland or both.