gastroenterology - pancreas and small bowel Flashcards
What are first 2 steps of pancreatic embryology?
What happens in 3rd step of pancreatic emrbryology?
What is the major pancreatic vessel? And what does it join up with?
major papilla
joins with distan commone bile duct to form papilla ampulla
Describe structure of pancrease?
head, neck, body, tail
Find the pancreas on this CT scan?
what type of imagery is this?
What is difference between endocrine and exocrine secretions?
endocrine - into blood stream, effect on distant target organ, ductless glands
exocrine - into duct have direct local effect?
Main endocrine secretions of pancreas?
insulin - anabolic
glucagon
somatostatin - endorcrine cyanide
Where is endocrine area of pancrease + how much of % of pancrease?
islets of langerhans
2
What is function of exocrine part of pancreas?
98%
secretess pancreatic juice into duodenum via sphincter of oddi/ampulla
digestive function
What are acinin?
ducts, grap like clusters of secretory units
acinar cells secrete pro enz into ducts
What are islets?
derived from brahncing duct
loose contact with ducts
differentiate into a and b cells secret into blood
more of them in tail than head
What is organisation of pancreatic microanatomy?
identify acinar and islets of langerhans
Label histologt of islet?
Label acini
What are 2 components of pancreatic juice
and which 2 cells produce each one?
How is bicarbaronate juice produces?
what is its function(2)?
What is relationship between dunodenal pH and bicarbonate secretions?