| Sphincter of Oddi | |
|---|---|
 Interior of the descending portion of the duodenum, showing bile papilla | |
| Details | |
| System | Digestive system |
| Location | Surrounds the Major duodenal papilla |
| Function | A circular muscle (sphincter) that controls the secretion of pancreatic juices and bile into the duodenum, and prevents reflux from the duodenum. |
| Identifiers | |
| Latin | m. sphincter ampullae |
| Acronym(s) | SO |
| MeSH | D009803 |
| TA98 | A05.8.02.018 |
| TA2 | 3112 |
| FMA | 15077 |
| Anatomical terminology | |
The sphincter of Oddi (also hepatopancreatic sphincter or Glisson's sphincter), abbreviated as SO,[1] is a muscular valve that in some animals, including humans, controls the flow of bile and pancreatic juice out of the gallbladder and pancreas respectively through the ampulla of Vater into the second part of the duodenum. It is named after Ruggero Oddi.