Flashcards in GI system Deck (17):
intrinsic factor is essential for absorption of __ in the __
Vitamin B12, ileum (TO REMEMBER ILEIUM look at Intrinsic starts with I)
(to remember look at the word intrinsic factor = it is long! Cobalamin = B12 = the long one
intrinsic factor is secreted by__ cells
parietal = PARI = Produces Acid and Releases Intrinsic Factor. parietal cells aka oxyntic = to remember = o is the letter right before p
the pancreas is an endocrine gland because it produces what hormones from what cells
islets of Langherhans = alpha cells make glucagon, beta cells make insulin, and delta cells make somatostatin
the endocrine pancreas therefore is a key regulator of ____
blood glucose. when glucose is high releases insulin, when glucose is low releases glucagon
the pancreas is what shape
L shaped = looks like an upside down L. It has 3 regions: head is closest to the duodenum, elongated body and tail.
the pancreas is an exocrine gland because it release what through ducts?
pancreatic juice: source of HCO3- = neutralizes gastric acid and also contains digestive enzymes
Histology of the pancreas: H + E stain = hematoxylin and eosin stain:
1. the islets of langherans stain lighter or darker?
2. the acini cells stain lighter or darker.
1. islets stain lighter, looks like an island
2. acini stain darker.
the ___ cells are the exocrine cells of the pancreas
acini cells- they make the pancreatic juice. that is their only job
the __ cells are the endocrine cells of the pancreas
cells of Langherhans
what is the pH of pancreatic juice
how much pancreatic juice is released per day
1.5 L (1500mL)
the pancreas sits behind or in front of the stomach
pancreatic juice is released into the ___duct which has the ___ sphincter
main bile duct
pancreatic duct sphincter
pancreatic juice is mostly secreted into the duodenum when we
but always a basal amount secreted when we are not eating
bile and intestinal juices are also neutral/alkaline and along with pancreatic juice will raise the duodenal pH to
papilla of Vater is the opening to the