The distal end of the common bile duct contains a sphincter that controlled the bile entering into the duodenum what is the sphincter called?

The sphincter at the distal end of the common bile duct that controls the flow of bile into the duodenum is called the sphincter of Oddi. This muscular structure regulates the release of bile and pancreatic juice into the small intestine, aiding in digestion. It opens in response to hormonal signals, particularly when food enters the duodenum.