general architecture
TRANSCRIPT
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IRNA NUR SYAFINAZ
BT ALI ZAINI
08 2 25
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SALIVARY GLANDS
parenchyma
stroma
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StromaComprisestheconnectivetissuecomponentsthatsupportand
conveysthevascularandnervessupply .
Functioningmechanically,theyprovideamatrixthat
connectsand bindsthecellsandorgansandultimately
givessupporttothe body.
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1 - interlobularexcretoryduct
2 - interlobularconnectivetissuesepta
PAROTID SALIVARY GLAND
interlobular excretory duct
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PAROTID SALIVARY GLAND
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Parenchyma
Theparenchyma ofanorganconsistsofthosecellswhich
carryoutthespecific functionoftheorganandwhichusually
comprisethe bulkoftheorgan.
Theparenchymaincludethesecretory unitsstructureand
ductsystemofthesalivaryglands
Secretory units
yAcinus unitstructure formedofgroupsofsecretory cells
surroundingalumenandrestingona basalmembrane
yThecellsareseparated fromthe basallamina bymodified
epithelialcellcalledthebasketcellorthemyoepithelial cell
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submandibular glandparenchyma
bv = bloodvesseldem =serousdemilune
aroundmucousacinus
muc =mucousacini
SD =secretory duct
ser =serousacini
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Myoepithelial cellFlattened, branchedcells
Manyprocessesthatgrasptheacinus likeabasket
Thecytoplasmabundantinactin andmyosinfilaments
Mediatecontractionandsqueezetheacinar secretionintothe
duct
They surroundalsothecellliningtheductsystemparticularlythe
intercalatedducts.
Themyoepithelial cellsacquireaspindleshapeandlieparallelto
thelengthoftheduct.
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1 - mucouspartofmixedsecretory unit
2 - serouspart (serousdemilune)ofmixedsecretory unit
3 - seroussecretory unit
4 - mucoussecretory unit5 - myoepithelial cells
SUBLINGUAL SALIVARY GLAND
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PAROTID SALIVARY GLAND
1 - seroussecretory units (acini)
2 - intercalatedexcretoryduct
3 - striatedexcretoryduct
4 - interlobularexcretoryduct5 - interlobularconnectivetissuesepta
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References
1. http://www.siumed.edu/~dking2/erg/glands.htm#saliv
2. http://www.histol.chuvashia.com/atlas-en/digestive-04-en.htm
3. http://www.courseweb.uottawa.ca/medicine-
histology/english/Gastrointestinal/Salivary.htm#Figure%206
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