Sphincter of Oddi consists of:
Correct Answer: 3 sphincters
Description: The entire sphincter mechanism is actually composed of numerous muscle fiber sphincters and the answer stands controversial.The latest information points to a total number of three (Gray's Anatomy, edition 41), though there have been mention of four, five and still more higher number in the past. The poal for entry of bile and pancreatic juice in humans has been divided into three pas: (i) biliary (choledochus), (ii) pancreaticus, and (iii) ampulla.
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