Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
35 Cards in this Set
- Front
- Back
|
what surrounds the large salivary glands?
|
capsule of conn tissue
rich in collagen fiber |
|
|
what is shape of serous cells?
|
pyramidal w/ broad base resting on basal lamina and narrow apical surface w/ short, irregular microbilli facing lumen
|
|
|
how are groups of serous cells organized?
|
form spherical mass: acinus w/ small lumen in center
|
|
|
what is shape of mucous cells?
|
cuboidal to columnar
-nuclei oval and pressed toward bases of cells |
|
|
how are groups of mucous cells organized?
|
tubules
-cyclindrical arrays of secretory cells surrounding lumen |
|
|
what are demilunes?
|
cap tubules
|
|
|
where are myoepithelial cells found?
|
b/w basal lamina and basal plasma membrane of cells making secretory end pieces and intercalated ducts
|
|
|
how many myoepithelial cells per secretory unit? describe cells.
|
2-3
well developed and branched |
|
|
what's shape of myoepithelial cells w/ intercalated ducts?
|
spindle shaped
lie parallel to length of duct |
|
|
what are myoepithelial cell char?
|
resemble smooth muscle cells in contractility
have intercellular juncs among selves and w/ secretory cells if they contract, accelerates saliva secretion |
|
|
what's myoepithelial cell main func?
|
prevention of end piece distension during secretion due to increase in intraluminal pressure
|
|
|
what empties into intercalated ducts in duct system?
|
secretory end pieces
|
|
|
what can intercalated ducts divide/differentiate into?
|
secretory or ductal cells
|
|
|
what is seen in striations of striated ducts?
|
infoldings of basal plasma membrane w/ lots of elongated mitochondria parallel to infolded membranes
|
|
|
what are the intralobular ducts?
|
intercalated
striated |
|
|
how do striated ducts become excretory ducts?
|
excretory ducts = interlobular ducts
striated ducts of ea lobule converge and drain into ducts in conn tissue septae separating lobules |
|
|
what are excretory/interlobular ducts lined w/?
|
initially- pseudostratified/stratified cuboidal epithelium
distally- stratified columnar eepithelium w/ few mucus secreting cells |
|
|
where does the main duct of ea major salivary gland empty into?
|
oral cavity
|
|
|
describe serous cells of parotid gland
|
rich in proteins w/ high amylase activity to digest carbs
|
|
|
what type of ducts in parotid gland?
|
intercalated
striated |
|
|
what's commonly found in conn tissue of large salivary glands?
|
lymphocytes
plasma cells |
|
|
what do plasma cells in conn tissue of glands secrete?
|
IgA
|
|
|
which gland is made of only serous cells?
|
parotid
|
|
|
describe mucous tubules of submandibular gland:
|
have demilunes
|
|
|
what's the advantage of the lateral and basal membrane infoldings toward the vascular bed in submandibular gland?
|
increases ion transporting surface area 60 times, facilitating electrolyte and water transport
|
|
|
what secretes lysozyme?
|
cells that make demilunes in submandibular gland and sublingual gland
|
|
|
where do you find serous cells in sublingual gland?
|
on demilunes of mucous tubules
|
|
|
how are cells arranged that release enzymes from pancreas?
|
acini
|
|
|
how can you tell diff from parotid gland and pancreas?
|
pancreas has no striated ducts and has islets of Langerhans
|
|
|
what type of cells are exocrine pancreatic acinus made of?
|
several serous cells surrounding lumen
-highly polarized cells w/ spherical nucleus and protein secreting |
|
|
what separates the pancreatic lobules?
|
thin capsule of conn tissue that covers pancreas and sends septa into it
|
|
|
what surrounds acini of pancreas?
|
basal lamina supported by delicate sheath of reticular fibers
|
|
|
what controls pancreatic secretion?
|
secretin
cholecytokinin |
|
|
what makes secretin release?
|
gastric acid pH <4.5
|
|
|
what enzyme promotes secretion of enzymes from zymogen granules?
|
cholecystokinin
|
