BIO 224 DIGESTIVE NOTES Flashcards
Pancreatic enzyme
Amylase
Lipase
protease
chymotrypsin
carboxypeptide
Amylase
carb into glucose
lipase
fats into fatty acid
protease
protien into amino acids
Chymotrypsin
break peptide into amino acids
Carboxypeptidase
split peptides into amino acids
Gallbladder function
Stores bile between meals ( from liver)
- Stimi by cholecystokinin (CCK) to release bile
Fat and protiens stimi gallbladder to
contract
metabolize
bilirubin
Positive feedback
Bile salts reabsorped, return to liver , stimi bile secretion
neg feedback
Duodenum empty, low CCK and Low secretin
Bicarb secretions
in the pancreas
Secretin
stimulates bicarb ( HCo3) secretion from pancreas to liver ( also pancreatic jucies)
Vasoactive intestinal polypeptides
last step stimulates pancreas bicarb secretion
Absorption
-SI after stomach acid in the duodenum
- Intestinal wall back into bloodstream