Assertion: large intestine's rectum | /r/CapableOf | enter pelvi
Facets:
value: as a retroperitoneal structure
type: MANNER
Source sentences:
text: The distal sigmoid colon lies on a rapidly shortening mesentery as it approaches the pelvis; by the level of the rectosigmoid junction the mesentery has all but disappeared, so that the rectum enters the pelvis as a retroperitoneal structure.