The Oral Cavity

Question 1

Transition zone between mucous membrane and skin

Answer 1

Vermilion border

Question 2

Boundary between vermilion border and skin

Answer 2

Mucocutaneous junction

Question 3

Corner of mouth - junction of upper and lower lip

Answer 3

Commissure

Question 4

Lines leading away from nose towards mouth

“Smile lines”

Answer 4

Nasolabial groove

Question 5

Vertical groove at base of nose

Answer 5

Phitrum

Question 6

Groove below lower lip towards the chin

Answer 6

Labiomental groove

Question 7

What are the components of the oral cavity?

Answer 7

Lips
Teeth
Tongue
Roof of mouth
Floor of mouth
Vestibules
Oral mucosa
Gingiva

Question 8

How many teeth are there in the primary dentition?

Answer 8

20

Question 9

What age range does mixed dentition typically occur?

Answer 9

6-12 years

Question 10

Top side of tonuge - covered with papillae

Answer 10

Dorsum

Question 11

Describe the underside of tongue

Answer 11

Shiny

Visible blood vessels

Question 12

Band of tissue attaching center of under surface of tongue to the floor of the mouth

Answer 12

Lingual frenum

Question 13

Boundary between vermilion border and mucous membrane

Answer 13

Wet dry line

Question 14

What are the features of the hard palate?

Answer 14

Palatine raphe
Palatine rugae
Incisive papilla

Question 15

Describe the sides of the hard palate

Answer 15

Not as hard as palatine raphe

Fat and salivary gland tissue beneath surface tissue

Question 16

Elevation of tissue between and behind central incisors

Answer 16

Incisive papilla

Gets irritated easily

Question 17

Slightly elevated centerline of hard palate running antero-posteriorly
Line of union of the right and left maxillae

Answer 17

Palatine raphe

Question 18

Where does the hard palate end?

Answer 18

Opposite the third molar area

Question 19

Series of elevations (bundles of connective tissue) running side to side in hard palate behind maxillary anterior teeth

Answer 19

Palatine rugae

Question 20

What is the function of palatine rugae?

Answer 20

Provide tactile sensing of objects/food

Aid in tongue placement

Question 21

Describe the soft palate (functions and features)

Answer 21

Function: close off nasal pharynx
Features: Uvula, fovea palatinae
No bone beneath the surface

Question 22

Small fleshy structure hanging from the center of the posterior border of the soft palate

Answer 22

Uvula

Question 23

Pits in soft palate located at either side of center line - slightly posterior to junction of hard and soft palate
Openings of ducts of a number of palatine glands

Answer 23

Fovea palatinae

Question 24

What is the main excretory duct of the submandibular gland?

Answer 24

Wharton’s duct

Question 25

Where does Wharton’s duct open?

Answer 25

Side of lingual frenum

Question 26

What makes up the sublingual glands?

Answer 26

One large gland and several small glands | Bartholin’s duct

Question 27

What is the main duct of the sublingual gland?

Answer 27

Bartholin’s duct

Question 28

Where is Bartholin’s duct located?

Answer 28

Opens near Wharton’s duct

Question 29

What’s another name for the sublingual folds?

Answer 29

Plica sublingualis

Question 30

Where are the sublingual folds?

Answer 30

Created by sublingual gland Extend horizontally to right and left of lingual frenum where it attaches to the floor of the mouth Openings of ducts from small underlying glands

Question 31

What is the tissue lining the inside of the cheek?

Answer 31

Buccal mucosa

Question 32

What is the main excretory duct of the parotid gland?

Answer 32

Stensen’s duct

Question 33

What is Stensen’s duct?

Answer 33

Flap of tissue that opens opposite maxillary first molar (variable) Along occlusal plane Main excretory duct of Parotid gland

Question 34

Space bounded by the cheek/lip on one side and by the teeth/gingiva covering the bone of the maxilla/mandible on the other side

Answer 34

Vestibule

Question 35

Mucous membrane that lines the oral cavity

Answer 35

Oral mucosa

Question 36

What are the types of oral mucosa?

Answer 36

Masticatory Lining Specialized

Question 37

What are the features of masticatory oral mucosa and where is it?

Answer 37

Tightly held down Hard palate Gingiva

Question 38

Mucous membrane and fibrous connective tissue that covers the alveolar process of the jaw and surrounds the necks of the teeth

Answer 38

Gingiva

Question 39

What defines the lining oral mucosa?

Answer 39

Not tightly held down

Question 40

What is specialized oral mucosa and where is it?

Answer 40

Tissue covering the tongue | Papillae and taste buds