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exocrine, merocrine, compound tubuloalveloar, and serous/mucous/mixed
how are salivary glands classified?
these are actually the serous and mucous cells which form a circular pattern and look pyramidal in shape
a star shaped branched cells that encircle terminal portions and "squeeze" the secretion into the duct by contracting
they are single epithelial cells capable of contracting ( what = muscle?)
they have long cellular projections which make them look like a squid
these are half moon shaped cells that lie between the secretory cells and the basement membrane which enclose the alveoli.
they are believed to be new epithelial cells which will replace epithelial cells that disintegrate
are a type of intralobular duct that are very small.
they drain acini directly and carry secretions to straited ducts
are a type of intralobular duct where as saliva is passed through it, it is "modified"
water and ions are absorbed into the cells and secreted out basal end and picked up by bloodstream
it's purpose is to conserve water and electrolytes .
these are excretory ducts that do not modify saliva
they lie within CT between lobules of the gland
they are lard and carry secretions out of gland and to the surface of the oral cavity.
functions of saliva?
acts as a SOLVENT
makes TASTE possible
aids in DIGESTION
Major Salivary Ducts
there are 3 pairs of these connected to the mouth by ducts
they produce most of the saliva in the mouth
this is the largest major salivary gland
on the side of the face, immediately below and in front of ear
secretes purely serous
25% of resting saliva through Stenson's Duct
the _________ gland is involved in epidemic parotitis (mumps). it is a viral infection that is painful when the gland secretes.
60-65% of resting saliva through Wharton's Duct
mixed gland, more serous than mucous
located below and toward posterior part of mandible
the smallest of the 3 major salivary glands
10% of resting volume
located in anterior floor of mouth next to mandibular canines
mixed gland; mostly mucous
Minor Salivary Ducts
these are more numerous and found throughout the oral cavity
they are unnamed and have shorter ductal systems
the function is to secrete small amounts of saliva and keep mucosa wet
pure mucous gland
located in soft palate and posterior and lateral of hard palate
none in anterior portion of palate
pure mucous gland
from posterior lateral hard palate into anterior fold of tissue in front of palatine tonsils
lingual glands of von ebner
located beneath vallate papillae
opens into trough around gland and washes off taste buds
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