GI 5 Flashcards
(35 cards)
digestive enzymes in the stomach are produced by what type of cell
chief cells
does venous blood from the GI tract go straight to the heart
no
what does the liver act as
biological filter
where does GI tract venous blood have to go through first before the heart
liver via the hepatic portal system
how many litres of secretions enter the lumen of the small intestine
3.5L
what is isotonic saline produced from
crypt cells
where is the sphincter of oddi located
duodenum
what allows pancreatic secretion and bile secretion
sphincter of oddi
what is trypsinogen converted to trypsin by
enteropeptidase
what activates zymogens released by pancreas
trypsin
where is enteropeptidase located
in the apical membrane of the small intestine
where does bicarbonate come from
duct cells in pancreas
what do duct cells produce? where are they located
secrete bicarbonate in the pancreas
what neutralizes acid entering the intestines from the stomach
bicarbonate from pancreas
what can alter pancreas secretions
cystic fibrosis
what is the largest internal organ
liver
what does the liver secrete
bile
what is bile specifically secreted from
hepatocytes
where are xenobiotics and drugs excreted in
bile
where do hepatocytes secrete bile into
bile canaliculi that carry it back to common bile duct
what are the cells of the liver
hepatocytes
what is biles role
lipid/fat digestion
what are the 3 main components of bile
bile salts
bile pigments
cholesterol
what enzymes are required to convert triglyceride to monoglyceride + free fatty acid
lipase
colipase
