Compléter digestion Version en ligne digestion par kenneth thomas 1 Buffers proteins Cholocystokinin Enterokinase Amalase secretions HCL Intrinsic starch Pepsin Mouth Ptylinogen - Ptylin ( Salivary ) Breaks down Stomach Chief Cells Pepsiogen - Breaks down in stomach Parietal Cells Activates pepsinoga Factor For B - 12 Muscosa Cells Gastrin Increase gastric Small Intestines ( Amylaselipase ) Secretin Increase pancreatic secretion acid chime from stomach Enterogastrone Closes pyloric sphincter In response to fats ( lipids ) Converts - trypsinogen - trypsin Chymotrypsingen - Chymotrypsin ( Breaks down proteins Causes gall bladder to release bile Closes pyloric sphincter Stops action of gastrin in stomac h