A05_8_02_016

下括約筋Inferior sphincter(Musculus sphincter inferior ductus choledochi)

Boyden, Four-part sphincter of下括約筋【かかつやくきん】 Ring of muscle fibers above the hepatopancreatic ampulla. Its fibers usually blend with those of the pancreatic duct.(『ボイデン括約筋(Boyden's sphincter)』とも呼ばれる。)

Pocket atlas of human anatomy

 

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