Oral Cavity Flashcards Preview

OrganHisto Final > Oral Cavity > Flashcards

Flashcards in Oral Cavity Deck (33)
1

What are the functions of the digestive system?

Ingestion, mastication, secretion, absorption, elimination of wastes, motility, hormone release, chemical digestion

2

What lines the oral cavity?

Oral mucosa

3

What is included in the oral cavity?

Tongue, teeth, minor and major salivary glands, tonsils, and lips

4

What are the three types of oral mucosa?

Masticatory, lining, and specialized mucosae

5

Where can we find masticatory mucosa?

Gingiva and hard palate

6

What is the surface epithelium of masticatory mucosa?

Keratinized or parakeratinized stratified squamous epithelium

7

What is important to note about the surface epithelium of the masticatory mucosa?

Superficial cells of parakeratinized stratified squamous epithelium keep their nuclei

8

What are the two parts of the lamina propria of the masticatory mucosa?

Papillary layer and reticular layer

9

What makes up the papillary layer of the lamina propria of the masticatory mucosa?

Thick loose connective tissue

10

What makes up the reticular layer of the lamina propria of the masticatory mucosa?

More dense connective tissue

11

What can be found in the papillary layer of the lamina propria of the masticatory mucosa?

Blood vessels, nerves, sensory receptors, and some Meissner's corpuscles

12

Where can we find lining mucosa?

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

13

What is the surface epithelium of the lining mucosa?

Nonkeratinized stratified squamous epithelium
OCCASIONALLY can be parakeratinized stratified squamous

14

What is the epithelium associated with the vermillion border of the lips (reddish part)?

Keratinized stratified squamous

15

Which is thicker: areas of nonkeratinized or keratinized stratified squamous epithelium?

Nonkeratininzed

16

What makes up the lamina propria of the lining mucosa?

Loose connective tissue with blood vessels and nerves

17

What makes up the submucosa of the lining mucosa?

Dense connective tissue

18

What can be found in the submucosa of the lining mucosa?

Minor salivary glands, sebaceous glands (mouth corners), larger blood vessels and nerves

19

Where can the submucosa of the lining mucosa be found?

In most places

20

Where can specialized mucosa be found?

Dorsal surface of tongue (papillae)

21

What is the surface epithelium seen on filiform papillae of the specialized mucosa?

Keratinized stratified squamous

22

What is the surface epithelium seen on all papillae besides filiform of the specialized mucosa?

Stratified squamous

23

What are the general functions of the specialized mucosa?

Move food
Taste

24

What is the distribution of thickness seen with the mucosa of the tongue?

Thicker dorsally, thinner and smoother posteriorly

25

What are the different types of papillae of the tongue?

Filiform, fungiform, foliate, circumvallate (vallate)

26

Small salivary (von Ebner) glands are associated with what type of papillae?

Vallate

27

What is the function of the von Ebner glands?

Produce serious fluid to cleanse the taste buds on vallate papillae

28

On which type of papillae are taste buds ABSENT?

Filiform

29

What makes up the lamina propria of the tongue?

Loose connective tissue, possible adipose

30

What is contained in the submucosa of the tongue?

Lingual salivary glands

31

What is unique about the intrinsic tongue muscles?

No external attachment

32

What is the intrinsic muscular arrangement of the tongue from dorsal to posterior?

Superior longitudinal muscle
Vertical muscles alternating with transverse muscles
Inferior longitudinal muscle

33

What is the function of the intrinsic tongue muscles?

Changes shape of tongue which is important for phonation (speaking) and moving food