saliva Flashcards
highly glycosylated glycoproteins that are viscous and largely responsible for lubricating the mucosal surface & providing a protective barrier
mucins
secreted in saliva and serves an important function in buffering acids in the mouth
bicarbonate
calcium-binding proteins in saliva that allow saliva to be super-saturated with calcium and thus contribute to enamel maturation and remineralization
proline-rich proteins and statherin
molecules that contribute to the direct anti-microbial functions of saliva; capable of anti-bacterial, anti-fungal, and anti-viral actions
lysozyme, peroxidase, the defensins and histatins, along with IgA
saliva can actively participate in tissue repair by secreting ____
growth factors like epidermal growth factor and nerve growth factor
lubrication provided by ____ important for chewing and swallowing
mucins
saliva contains enzymes like ____ which begins to dissolve starch and ____ which breaks down fats into fatty acids and glycerol
amylase; lipase
saliva is vital for the proper function of taste- tasty molecules must first be dissolved in ____ in saliva so that they can be transported to the taste buds
water
the parotid gland discharges saliva thru _____ opposite the _____
stenson’s duct; 2nd maxillary molar
the submandibular gland empties into the oral cavity via ____ on the ____
wharton’s duct; lingual frenum
sublingual gland empties into series of ducts on the ____ behind wharton’s - called _____
sublingual fold; bartholin’s and rivinus’s ducts
like all glands, salivary glands are made up of ____ and ____
stroma; parenchyma
stroma provides ____ to the gland, forming the ____ an organizing the gland into lobes
structural support; capsule
____ make the saliva and take care of discharging it to its final destination
parenchyma
in the salivary gland, stroma is made up of ____ and parenchyma is made up of _____
connective tissue; epithelium
2 main components of the parenchyma
secretory portion- secretory endpieces or “acini”
ducts
timing of development of parotid/submandibular/sublingual and minor salivary glands
parotid: week 6
submandibular: end of week 6
sublingual and minor: weeks 8-12
acini ____ saliva and ducts ____ and also ____ certain components present in the salivary secretion
secrete; secrete; resorb
“primary secretion” by acinar cells
water
ions (sodium and chloride)
proteins
ISOTONIC
“secondary secretion” by duct cells
resorb Na and Cl (HYPOTONIC)
secrete proteins
secrete bicarbonate ions
the sympathetic NS is responsible for ____ secretion which is ____ and ____
protein; viscous; scant
the parasympathetic NS is mainly responsible for fluid secretion which is ____ and _____
watery; copious
types of cells in the stroma
fibroblasts (make collagen) blood vessels (supply parenchyma) nerve fibers (supply parenchyma) plasma cells (secrete antibodies) fat cells (increase with age)
