The pancreatic duct is a tube that carries digestive enzymes from the pancreas to the small intestine. It opens into the first part of the small intestine, called the duodenum, which is located just after the stomach. The enzymes secreted by the pancreas are important for the digestion of carbohydrates, proteins, and fats in the small intestine, and their release into the duodenum is regulated by the hormone secretin.