Oral Cavity

Question 1

The epithelium and the underlying connective tissue form

Answer 1

The mucosa

Question 2

The Oral Cavity have three type of mucosa

Answer 2

• Lining mucosa with none keratinized stratified squamous epithelium
• masticatory mucosa who is epithelium is keratinized stratified squamous epithelium
• Specialized mucosa who is epithelium is non keratinized stratified Epithelium that possess taste bud

Question 3

The lips are divided into:

Answer 3

external (skin) region, the vermilion zone, and the internal(mucosal) region.

Question 4

The dorsal surface of the tongue, hard palate, and gingivae are coverd by….

Answer 4

masticatory mucosa;

Question 5

the dorsum of the tongue, soft palate, and regions of the pharynx are coverd by….

Answer 5

specialized mucosa;

Question 6

Dorsum of the tongue covered by both

Answer 6

masticatory and specialized mucosa

Question 7

The first two regions of the lips are covered by

Answer 7

keratinized epithelium,

Question 8

the lip internal region is lined by a

Answer 8

wet stratified squamous non keratinized epithelium.

Question 9

The lip muscle is

Answer 9

Skeletal muscle

Question 10

Which structures are present in the the lips skin

Answer 10

Sebaceous glands, sweat glands, and hair follicles

Question 11

Fordyce’s granules)

Answer 11

non functional sebaceous glands in the vermillion zone

Question 12

what reflect the pink color of the vermillion zone?

Answer 12

very rich in both sensory innervation and capillaries,

Question 13

the vermillion zone is kept moist with …

Answer 13

saliva from the tongue.

Question 14

The palate is divided into…

Answer 14

anterior hard palate (possessing a bony shelf in its

core) and a posterior soft palate (possessing skeletal muscle in its core).

Question 15

The palate separates…

Answer 15

nasal cavity from the oral cavity.

Question 16

The entire nasal aspect of the palate (with the exception of the uvula) is lined by

Answer 16

pseudostratified ciliated columnar epithelium

Question 17

(respiratory epithelium) is composed of.

Answer 17

pseudostratified ciliated columnar epithelium

Question 18

The hard palate is lined on its oral aspect by

Answer 18

stratified squamous para keratinized

to keratinized epithelium.

Question 19

The soft palate is lined on its oral aspect by

Answer 19

stratified squamous non to keratinized epithelium.

Question 20

What is the function of salivary glands?

Answer 20

They synthesize and secrete salivary amylase, lysozyme, lactoferrin, and
immunoglobulin A (IgA)

Question 21

salivary glands are further classified as

Answer 21

serous, mucous, or mixed

Question 22

what is the functional unit of a salivary gland, and what is composition?

Answer 22

Salivon

Its composed of the acinus and the intercalated and striated ducts

Question 23

Mucous acini may be overlaid with

Answer 23

serous demilunes.

Question 24

acini possess special structure which is ?

Answer 24

myoepithelial cells

Question 25

major salivary glands are ………glands

Answer 25

tubuloacinar

Question 26

Acini secrete what?

Answer 26

a primary secretion that resembles extracellular fluid.

Question 27

Salivary glands are classified according to their types of acini into:

Answer 27

(1) Parotid glands (Serous)
(2) Sublingual glands (Mucous)
(3) Submandibular glands (Mixed) consist of both serous and mucous acini

Question 28

What is the function of the Intercalated ducts

Answer 28

originate in the acini and join to form striated ducts. They

may deliver bicarbonate ions into the primary secretion.

Question 29

What is the function of the Striated ducts

Answer 29

are lined by ion-transporting cells that remove
sodium and chloride ions from the luminal fluid (via a sodium pump) and actively pump potassium and bicarbonate ions into it, thus transforming the initial saliva

Question 30

Salivary calculus

Answer 30

a calcification that is formed usually in the parotid gland.painful swelling of the parotid gland.