Assertion: pylorus | /r/CapableOf | merge into retroperitoneal duodenum
Facets:
Source sentences:
text: While the position of most sections of this hollow muscular sack are variable, there are 2 sections, one oral and the other aboral, which have a fixed position: The entrance of the stomach (cardia), fixated by the lower esophageal sphincter, and the pylorus, which merges into the retroperitoneal duodenum and is therefore immobile.