SO has various meanings in the Dysfunction category. Discover the full forms, definitions, and usage contexts of SO in Dysfunction.
The sphincter of Oddi, abbreviated as SO, is a muscular valve that controls the flow of digestive juices through the ampulla of Vater into the second part of the duodenum. It is named after Ruggero Oddi. The sphincter of Oddi is relaxed by the hormone cholecystokinin via vasoactive intestinal peptide.
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