CT, JE, and gingival tissues

Question 1

3 things connective tissue is composed of

Answer 1

fibroblast, macrophage and nuetrophils, and lymphocytes and PMNs

Question 2

what makes the fibers and ground substance of the extracellular matrix?

Answer 2

fibroblast

Question 3

what eats dying cells and invades microorganisms

Answer 3

macrophage and neutrophils

Question 4

what cells defend the body and are the first to arrive at the site of an infection

Answer 4

PMNs and lymphocytes

Question 5

name 4 types of connective tissue

Answer 5

cartilage, fat, and bone marrow

Question 6

what are the deep extensions of the epithelium that reach into the connective tissue

Answer 6

rete pegs or epithelial ridges

Question 7

_____ are the finger-like extensions of CT that extend up into the epithelium

Answer 7

connective tissue papilla

Question 8

what is the purpose of rete pegs and CT papilla?

Answer 8

to increase surface area for a strong adhesion and also increases the area to receive nourishment

Question 9

what are the two types of pemphigus?

Answer 9

1. Volgarous= split at desmesome

2. Cicatrical=split at epithelial and CT (hemisdesmesome)

Question 10

What do cell junctions do?

Answer 10

attach a cell to a neighboring cell or to the basal lamina

Question 11

____ connects two neighboring epithelial cells and their cytoskeletons together

Answer 11

desmesome

Question 12

____ connects epithelial cells to the basal lamina.

Answer 12

hemidesmesome

Question 13

what are the three epithelial areas in the gingival epithelium?

Answer 13

1. oral epithelium
2. sulcular epithelium
3. junctional epithelium

Question 14

____ covers the free gingiva and attached gingiva.

Answer 14

oral epithelium

Question 15

turn over rate of Oral epithelium and keritinization

Answer 15

10-12 days

keratinized

Question 16

____ is the lining of the gingival sulcus, extends from the crest of the gingival margin to the coronal edge of the JE.

Answer 16

Sulcular epithelium

Question 17

Sulcular epithelium IS keratinized and allows ______ to flow from the CT to the sulcus

Answer 17

gingival crevicular

Question 18

List 4 functions of gingival crevicular fluid

Answer 18

1. cleanses the sulcus
2. increases during pregnancy
3. provides minerals for subgingival calculus
4. transports many substances such as drugs (especially tetracycline)

Question 19

4 reasons why the gingival sulcus is ideal for bacterial growth

Answer 19

1. it is a stagnant environment (non accessible except for flossing)
2. bacteria in sulcus are fed by protein in gingival fluid
3. dead tissue cells from disease cites provide nutrients for bacteria
4. gingival fluid is less effective than saliva

Question 20

____ forms the base of the sulcus and joins the gingiva to the tooth surface

Answer 20

Junctional epithelium

Question 21

where is the JE the thickest and thinnest on the tooth

Answer 21

thickest at the coronol zone (tooth crown)

thinnest at the apical zone (root of tooth)

Question 22

what cells play a role in defending the periodontium from bacterial infections by signaling the immune respone

Answer 22

epithelial cells

Question 23

in health JE is the tissue smooth or wavy? turnover rate?

Answer 23

no wavy junctions

1-6 days (fastest turnover rate)

Question 24

During eruption the JE attaches on ____

during complete eruption it attaches on ____

Answer 24

enamel

cementum

Question 25

Can the JE migrate?

Answer 25

yes, in disease the JE will migrate apically

Question 26

____ is between the epi cells of the JE and the tooth surface

Answer 26

internal basal lamina

Question 27

_____ is between the epi cells of the JE and the gingival tissue

Answer 27

external basal lamina

Question 28

the ____ ____ lies between the tooth and the interal basal lamina

Answer 28

dental pellicle

Question 29

the epi cells attach the tooth surface by ____ hemidesmosomes at the coronol zone and ___ at the apical zone

Answer 29

4-8 at the coronol zone

2 at the apical zone

Question 30

Provide 2 functions of the JE

Answer 30

1. attaches the gingiva to the enamel and/or cementum
2. provides a protective barrier between the plaque and the CT
3. provides a seal at the base of the sulcus

Question 31

function of CT of free and attached gingiva

Answer 31

provides solidity to the gingiva and attaches the gingiva to the cementum

Question 32

the JE and the gingival fibers are referred to as the ___________

Answer 32

dentogingival unit

Question 33

what are the 5 supragingival fibers that help strengthen the JE to the tooth

Answer 33

1. alveologingival
2. circular
3. dentogingival
4. dentoperiosteal
5. transseptal

Question 34

_____ extends from the periosteum of the alveolar crest into the gingival CT and attaches the gingiva to the bone

Answer 34

alveologingival

Question 35

____ encircles the tooth in a ring-like manner, and connects adjacent teeth to one another

Answer 35

circular

Question 36

_______ is embedded in the cementum near the CEJ and fan out into the gingival CT and attach the gingiva to the teeth (most numerous group)

Answer 36

dentogingival

Question 37

_______ extends from the cementum near the CEJ, across the alveolar crest

Answer 37

dentoperiosteal

Question 38

_____ pass from the cementum on one tooth, over the crest of the alveolar bone to the cementum of the adjacent tooth. these always remain in tack

Answer 38

transseptal