Lecture 32 11/8/23

Question 1

What constitutes the oral mucosa?

Answer 1

epithelium and lamina propria

Question 2

What type of epithelium is found in the oral mucosa?

Answer 2

stratified squamous

Question 3

What is labial?

Answer 3

related to/near the lips

Question 4

What is buccal?

Answer 4

related to/near the cheek

Question 5

What is lingual?

Answer 5

related to/near the tongue

Question 6

What are the palatine arches?

Answer 6

oral mucosa caudal to the last molar teeth

Question 7

What is the mucocutaneous junction of the lip?

Answer 7

where the oral mucosa of the inner lip and the haired skin of the outer lip meet

Question 8

What is the orbicularis oris muscle?

Answer 8

skeletal muscle of the lips; encircles the mouth

Question 9

What is a commisure?

Answer 9

angle where upper and lower lips meet

Question 10

What are the characteristics of the filiform papillae?

Answer 10

-most common
-mechanical function only/no taste buds
-conical/pointy/shark fin shape
-provide tongue’s coarse appearance

Question 11

What are the characteristics of the fungiform papillae?

Answer 11

-mushroom-shaped
-have taste buds within the papillae

Question 12

What are the characteristics of circumvallate papillae?

Answer 12

-least common
-largest
-cylindrical
-have taste buds within the papillae
-only on caudal portion of tongue

Question 13

What are the characteristics of taste buds?

Answer 13

-microscopic intraepithelial gustatory sensory organ
-composed of spindle-shaped cells
-roughly oval and less deeply stained

Question 14

What tissue covers the surface of the ventral tongue?

Answer 14

stratified squamous epithelium

Question 15

What is the lingual frenulum?

Answer 15

midline band of tissue connecting the tongue to the floor of the mouth

Question 16

What tissues are present within the tongue?

Answer 16

-skeletal muscle
-adipose tissue
-lingual salivary glands

Question 17

How are the skeletal muscle and adipose tissue of the tongue arranged?

Answer 17

in varying parallel and perpendicular bundles (plaid pattern)

Question 18

What are the characteristics of the gingiva?

Answer 18

-oral mucosa that covers only the bones that support the teeth
-lamina propria contains only dense connective tissue

Question 19

What is the role of the palate?

Answer 19

separates oral cavity from nasal cavity

Question 20

Which tissue types are found on each side of the palate?

Answer 20

-resp. epithelium on the dorsal surface
-oral mucosa on the ventral surface

Question 21

What is the hard palate?

Answer 21

the part of the palate that is ridged and contains bone

Question 22

What is the soft palate?

Answer 22

the part of the palate only containing skeletal muscle and no bone

Question 23

What is contained within the pulp cavity?

Answer 23

-blood vessels
-nerves
-connective tissue

Question 24

What are the characteristics of the dentin?

Answer 24

-makes up majority of tooth
-produced by odontoblasts

Question 25

What are the characteristics of enamel?

Answer 25

-hard outer covering on exposed tooth
-produced by ameloblasts
-primarily calcium hydroxyapatite

Question 26

What is cementum?

Answer 26

substance that covers the surface of tooth roots

Question 27

What is the periodontal ligament?

Answer 27

attaches tooth to alveolar bone

Question 28

What is alveolar bone?

Answer 28

bony tooth socket

Question 29

What are simple/brachydont teeth?

Answer 29

teeth that stop growing after eruption

Question 30

What are complex/hypsodont teeth?

Answer 30

teeth that continually grow throughout life