The attached image demonstrates the endoscopic view of the major duodenal papilla. It is an opening in the medial aspect of the duodenum where pancreatic duct as well as the common bile duct enters the small intestine. Reference: https://www.sciencephoto.com/media/525334/view/major-duodenal-papilla-endoscopic-view Image via: https://www.sciencephoto.com/media/525334/view/major-duodenal-papilla-endoscopic-view