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GI14 Pancreas
Questions and stuff
29
Medical
Graduate
01/28/2012

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Cards

Term
Pancreatic exocrine component makes up what part of the gland and produces how much fluid?
Definition
90% ; 2-2.5 L/day
Term
Pancreatic endocrine component (10%) is composed of _____.
Definition
Islets of Langerhans - secrete hormones into circulation via pancreatic vein
Term
Pancreas is retro or intra peritoneal?
Definition
retroperitoneal
Term
The head is located in the _____ and the tail extends to the _____ of the spleen.
Definition
duodenal concavity ; hilum
Term
Like the liver, the pancreas develops as an outgrowth of the _____.
Definition
Primitive foregut
Term
The main pancreatic duct (aka Duct of Wirsung) is composed of fused ducts from the ____ and _____ anlage.
Definition
dorsal and ventral
Term
Main pancreatic duct begins in the ____ and continues down the length of the organ.
Definition
tail
Term
Main pancreatic duct is lined by ____ epithelium with goblet cells.
Definition
simple columnar.
Term
There is a large reserve of exocrine pancreas function. More than ____ of these cells must be damaged before maldigestion signs seen.
Definition
90%
Term
The pancreas is a _____ gland.
Definition
compound serrous
Term

These are intra-canard ducts - the origin of the intercalated ducts

Unique to the pancreas.

Appear as pale cells within acini.

Definition
Centroclinal cells
Term
Each _____ cell is capable of producing about 20 different enzymes or zymogens.
Definition
acinar
Term
Pancreatic ducts are not _____ (as opposed to the salivary gland).
Definition
striated
Term

Cells lining the _____ ducts secrete water and bicarb ions.

(ductular cells)

Definition
intercalated
Term
The digestive fluid secreted by the exocrine pancreas is _____ and _____ (pH >8.0).
Definition
isotonic and alkaline
Term
fat rich food -> CCK -> 
Definition
enzyme-rich secretions by acinar cells
Term
acidic chyme -> secretin -> 
Definition
watery, bicarb-rich secretions by ductal cells
Term

A cells - Glucagon

Increases blood glucose levels

Definition

20% of islet cells

more peripherally located in islet

dense core granules are round, uniform, have a clear halo

Term
B cells - insulin -> decreases blood glucose levels
Definition

70% of islet cells

centrally located throughout islets

Term
D cells - somatostatin
Definition

5% of islet cells

inhibits other islet cells (paracrine effect)

slows motility of intestinal tract (extends digestion and absorption time)

Term
F cells
Definition
pancreatic polypeptide, rare cells
Term

The surgical removal of the gall bladder.

Common procedure.

Definition
Cholecystectomy
Term

Gallstones, formed when solid concentrations of cholesterol/lipid act as node for Ca deposition.

10-15% adults may have small ones.

Large ones can cause obstructive jaundice, cholecystitis, pancreatitis, etc.

Definition
Cholelithiasis
Term

Disease of uncertain cause

ongoing inflammation, destruction, fibrosis of intrahepatic and extrahepatic bile ducts.

Leadds to cirrhosis, portal hypertension, liver failure.

Definition
Primary sclerosing cholangitis
Term

uncommon, 10% mortality

autodigestion by activated proteolytic enzymes is pathogenesis.

blood tests may show increased levels of certain enzymes leaking into blood.

Definition
acute pancreatitis
Term

90% patients depend on pancreatic enzyme supplements.

Results in dilated (cystic) ducts with surrounding fibrosis.

Definition
Cystic fibrosis
Term
Diabetes mellitus
Definition
should know this already
Term

form of cancer involving B cells of islets

may be functional tumors resulting in unregulated insulin hypersecretion and symptoms of hypoglycemia

Definition
Insulinoma
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