Pancreas
- The external secretions of the pancreas are controlled by the nervous sytem (vagus nerve) and the endocrine system (the hormone secretin from the duodenum).
- The three major constituents of the pancreatic juice are trypsin (for the hydrolysis of proteins when in conjunction with enterokinase present in the small intestine), amylase (for initial digestion of starch), and lipase (for the digestion of fats).