Flashcards in the oral environment Deck (122)
state the oral fluids
saliva, gingival crevicular fluid, oral bacteria, food debris and epithelial cells
what are the 2 main functions of oral fluid?
protective and digestive
in which ways does the oral fluid perform a protective function?
cleansing, mucosal protection, buffering, remineralisation, antimicrobial
in which ways does the oral fluid perform a digestive function?
digestive enzymes, lubricates bolus for chewing and swallowing
what may a reduced saliva flow cause?
caries in abnormal places (buccal and labial area), xerstomia
name the 3 major pairs of salivary glands glands
parotid, sublingual and submandibular
where are the minor salivary glands located?
buccal, labial, lingual, palatal
what are the basic secretory units of salivary glands?
clusters of cells called acini
which duct leads directly from the acini of salivary glands?
which duct leads directly from the intercalated duct?
where is all saliva produced by salivary glands gathered?
which major salivary gland produces mixed secretions?
which major salivary gland produces serous secretion
which major salivary gland produces mucous secretion
which minor salivary glands produce mucous secretion
buccal, labial, lingual and palatal
which minor salivary gland produces serous and mucous secretions?
where is gingival crevicular fluid produced?
the epithelium lining gingival crevice
what may gingival crevicular fluid also be called?
what increases the flow of gingival crevicular fluid?
what is the average daily salivary flow?
which salivary gland is the major contributor when sleeping?
which salivary gland is the major contributor when awake?
which salivary gland is the major contributor when stimulated?
which factors affect unstimulated salivary flow rate?
state of hydration, previous stimulation, circadian and circannual rhythms, medication and salivary gland disease
what are the inorganic components of saliva and their % composition?
water (99.5%), ions (0.2%)
what are the organic components of saliva and their % composition?
mainly proteins (0.3%) and very little carbohydrates or lipids
which buffering ion concentration is greater at higher salivary flow rate?
which ions are present in saliva?
fluoride, calcium and phosphate, thiocyanate, bicarbonate, phosphate
what is the function of the fluoride ion in saliva?
antibacterial, forms fluoroapatite, promotes remineralisation