oral fluids Flashcards
what are the protective functions of oral fluids?
cleansing, mucosal protection, buffering, remineralisation, antimicrobial
what are the digestive functions of oral fluids?
taste, digestive enzymes, lubrication
what is the consequence of reduced salivary flow?
increased incidence of caries on buccal and labial surfaces
what type of glands and secretions are salivary glands?
exocrine. serous and/or mucous
describe the arrangement of salivary glands
compound, tubulo-acinar arrangement
what types of salivary glands are anatomically distinct and identifiable?
major
describe minor salivary glands
diffuse collections of glandular tissue in lamina propria
what are the 3 major salivary glands? & type of secreations
parotid-serous, submandibular-mixed, sublingual-mucous
what are the 4 minor salivary glands?
buccal-mucous, labial-mucous, lingual-both, palatal-mucous
where does gingival crevicular fluid come from?
epithelium lining the gingival crevice
what is the function of GCF?
flow increases with inflammation
what factors affect unstimulated salivary flow rate?
state of hydration, previous stimulation, circadian rhythms, circannual rhythms, medications, salivary gland disease
what is the inorganic composition of saliva?
water and ions (0.2%)
what is the organic composition of saliva?
proteins (0.3%), little carbohydrate or lipid
what concentration increases with saliva flow rate?
bicarbonate ion
