WEEK 7 - GINGIVA, MUCOUS MEMBRANE, LIPS

Question 1

in an adult, what does normal gingiva cover?

Answer 1

the alveolar bone and tooth root to a level just coronal to the CEJ

Question 2

Macroscopically the gingiva can be divided into 4 anatomical zones

Answer 2

marginal gingiva, gingival sulcus, attached gingiva, interdental gingiva

Question 3

Microscopically gingiva comprises

Answer 3

epithelial and connective tissue components

Question 4

what is marginal gingiva

Answer 4

unattached gingiva that surrounds the teeth

Question 5

what is the shallow linear depression on the border of the marginal gingiva called

Answer 5

marginal groove

Question 6

what is the gingival sulcus?

Answer 6

shallow space around the tooth

Question 7

what bounds the gingival sulcus

Answer 7

surface of the tooth and epithelial lining of the gingiva

Question 8

under ideal conditions the gingival sulcus depth is

Answer 8

0 mm

Question 9

what is attached gingiva?

Answer 9

firm tightly bound to the underlying periosteum of the alveolar bone

Question 10

what is the attached gingiva continuous with?

Answer 10

marginal gingiva

Question 11

the facial aspect of the attached gingiva extends to the ____ and what is it demarcated by?

Answer 11

loose and movable alveolar mucosa, mucogingival junction

Question 12

the attached gingiva has a ________ appearance because of

Answer 12

stippled, epithelial rete ridges

Question 13

what is interdental gingiva/papilla?

Answer 13

it occupies the interproximal space

Question 14

when gingivae is inflamed it becomes _____ and the ______ line cannot be seen

Answer 14

red, mucogingival junction

Question 15

gingiva comprises of which types of tissues

Answer 15

overlying stratified squamous
underlying central core of connective tissue

Question 16

what is the primary cell type of gingiva

Answer 16

keratinocyte

Question 17

the three degrees of keratinization are possible within the gingiva

Answer 17

orthokeratinization, parakeratinization, non - keratinized

Question 18

what is the function of gingival epithelium?

Answer 18

physical barrier, host defense coordination, rapid turnover to ensure clearance of invading bacteria

Question 19

what is the function of gingival connective tissue?

Answer 19

high turnover of cells to ensure good repair, abundant blood and nerve health to help with healing

Question 20

what is the function of mucosa?

Answer 20

keep the inside of cavities moist

Question 21

what does mucosa consist of?

Answer 21

epithelial lining which may have glands an lamina propria

Question 22

what types of connective tissue can lamina propria be made of?

Answer 22

loose areolar, dense irregular

Question 23

when would dense irregular connective tissue be used as lamina propria?

Answer 23

where attachment is important such as the hard palette

Question 24

beneath the mucosa is a layer of supporting connective tissue called the

Answer 24

submucosa

Question 25

the submucosa contains varied

Answer 25

glands that open onto epithelium

Question 26

oral mucosa can be broken down into

Answer 26

lining, masticatory, specialized

Question 27

what is the purpose of lining mucosa? give examples

Answer 27

where there isn't much friction ie lips, cheek, soft palette, floor of mouth

Question 28

what is the purpose of masticatory mucosa? give examples

Answer 28

areas subject to friction ie gingiva and hard palette

Question 29

what is the purpose of specialized mucosa? give examples

Answer 29

where you need a special function ie taste buds on anterior 2/3 of dorsum of tongue

Question 30

What is the vermilion border of the lips?

Answer 30

area between the lip and skin

Question 31

what is the vermilion zone?

Answer 31

are between the skin and mucosa lining

Question 32

what is the inner surface of the lip?

Answer 32

mucosa forming part of oral cavity

Question 33

the bulk section of the lip is made of

Answer 33

skeletal muscle

Question 34

the external surface of the lip is lined by

Answer 34

thin skin

Question 35

the inner surface of the lip is lined by

Answer 35

oral mucosa

Question 36

the vermilion zone of the lip is made from

Answer 36

stratified squamous epithelium with very little keratin. the lamina propria is highly vascular

Question 37

the lining mucosa of the lip is made from

Answer 37

stratified squamous non keratinized epithelium, lamina propria and submucosa