The gall bladder is a small, sac-like organ, which is located under the liver. It stores the bile secreted by the liver and aids in the digestive process. Bile is released from the gallbladder into the upper small intestine, duodenum, in response to food, especially fats. The cystic duct connects the gall bladder to the common hepatic duct to form the common bile duct. This common bile duct then joins the pancreatic duct, and enters through the hepatopancreatic ampulla at the major duodenal papilla.