Digestive Glands and Liver Flashcards
What is the name of the main excretory duct of the pancreas?
duct of Wirsung
What is the name for the smaller accessory ducts of the pancreas?
duct of santorini
What duct contains cells with receptors for secretin and secrete water and bicarbonate ion?
intercalated ducts
What type of acini are found in the pancrease? mucous, serous, sebaceous?
serous
What type of epithelium is centroacinar cells?
truncated cuboidal epithelium within the lumen of acini.
They are unique to the pancreas
What type of cells within pancreas contains zymogen granules?
acinar cells- which are pyramidal serous cells.
-contains zymogen granules within the apical zone
To what enzymes does the pancreas possess the inactive zymogen?
trypsin, chymotrypsin, amylase, and lipase
True or False. Pancreatic acini contain myoepithelium cells.
False. Pancreatic acini do not have myoepithelial cells.
What type of connective tissue supports the pancreas?
- The pancreas lacks a capsule.
- has thin layer of loose CT from which septa pass internally dividing the gland into many small lobules
What are the three types of cells in the islets of Langerhans of the pancreas?
A-cells (alpha cells)
B-cells (beta cells)
D-cells (delta cells)
What is the function of A-cells?
possess fine cytoplasmic granules and are presumed to form glucagon.
What is the function of B-cells?
possess course cytoplasmic granules and produce insulin. They are more numerous than alpha cells.
What is the function of D-cells?
secrete somatostatin, which helps to control levels of insulin and glucagon.
What are the cell types that are endodermal-derived endocrine cell aggregations?
A-cells and B-cells
