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Flashcards in the oral environment Deck (122)
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1

state the oral fluids

saliva, gingival crevicular fluid, oral bacteria, food debris and epithelial cells

2

what are the 2 main functions of oral fluid?

protective and digestive

3

in which ways does the oral fluid perform a protective function?

cleansing, mucosal protection, buffering, remineralisation, antimicrobial

4

in which ways does the oral fluid perform a digestive function?

digestive enzymes, lubricates bolus for chewing and swallowing

5

what may a reduced saliva flow cause?

caries in abnormal places (buccal and labial area), xerstomia

6

name the 3 major pairs of salivary glands glands

parotid, sublingual and submandibular

7

where are the minor salivary glands located?

buccal, labial, lingual, palatal

8

what are the basic secretory units of salivary glands?

clusters of cells called acini

9

which duct leads directly from the acini of salivary glands?

intercalated duct

10

which duct leads directly from the intercalated duct?

striated duct

11

where is all saliva produced by salivary glands gathered?

collecting duct

12

which major salivary gland produces mixed secretions?

submandibular

13

which major salivary gland produces serous secretion

parotid

14

which major salivary gland produces mucous secretion

sublingual

15

which minor salivary glands produce mucous secretion

buccal, labial, lingual and palatal

16

which minor salivary gland produces serous and mucous secretions?

lingual

17

where is gingival crevicular fluid produced?

the epithelium lining gingival crevice

18

what may gingival crevicular fluid also be called?

secular fluid

19

what increases the flow of gingival crevicular fluid?

inflammation (gingivitis)

20

what is the average daily salivary flow?

500-700ml

21

which salivary gland is the major contributor when sleeping?

submandibular

22

which salivary gland is the major contributor when awake?

submandibular

23

which salivary gland is the major contributor when stimulated?

parotid

24

which factors affect unstimulated salivary flow rate?

state of hydration, previous stimulation, circadian and circannual rhythms, medication and salivary gland disease

25

what are the inorganic components of saliva and their % composition?

water (99.5%), ions (0.2%)

26

what are the organic components of saliva and their % composition?

mainly proteins (0.3%) and very little carbohydrates or lipids

27

which buffering ion concentration is greater at higher salivary flow rate?

bicarbonate

28

which ions are present in saliva?

fluoride, calcium and phosphate, thiocyanate, bicarbonate, phosphate

29

what is the function of the fluoride ion in saliva?

antibacterial, forms fluoroapatite, promotes remineralisation

30

what is the function of the calcium ion in saliva?

remineralisation