Sphincter of Oddi consists of: (A) 2 sphincters, (B) 3 sphincters, (C) 4 sphincters, (D) 5 sphincters
Answer is B. The sphincter of Oddi is a muscular valve that controls the flow of digestive juices through the ampulla of vater into the second pa of the duodenum. It is named after ruggero oddi. Ref - BDC 6e vol2 pg259 , britannica.com