amylase. This is an enzyme that breaks down starches  or complex carbohydrates. 

the long amino acid chains . Mucus lines the stomach's walls. It protects the stomach from digestive juices. Hydrochloric acid known as HCL, lines the walls and kills invading pathogens. It also provides a PH that will neutralize the fluid so the stomach will not be broken down by enzymes. All these digestive fluids in the stomach are known as Gastric fluids.  

Bicarbonate ions are carried from the pancreas to small intestine to neutralize HCL in the gastric fluids.Secretion is a hormone that stimulates Bicarbonate ions to be released and other pancreatic fluids.. Enterokinase is another enzyme that converts trypsinogen to trypsin. Trypsin (active form of trypsinogen) digests proteins and breaks down long chain polypeptides into peptides which are shorter chains. The last enzyme Erepsins completes the final breakdown of proteins. These enzymes break down the small chain peptides into amino acids. It also releases   cholecystokinin (CCK) which travel to the gall bladder and triggers it to release bile salts.