The pancreas is a compound (both exo-crine and endrocrine) elongated organ situated between the limbs of the U shaped duodenum. The exocrine portion of pancreas secretes an alkaline pancreatic juice containing enzymes liketrypsinogen, chymotrypsinogen, procarboxy peptidases, amylases, lipases and nucleases. The endocrine portion secretes hormones, insulin and glucagon.