continuous_with develops_from proximal-distal subdivision of colon hindgut rectum sigmoid colon BTO:0000645 CALOHA:TS-2044 EFO:0000846 EMAPA:36391 FMA:14548 MAT:0000314 MESH:A03.492.411.495.356.668 MIAA:0000314 OpenCyc:Mx4rwHX_-5wpEbGdrcN5Y29ycA The part of the large intestine that is closest to the rectum and anus. It forms a loop that averages about 40 cm. in length, and normally lies within the pelvis, but on account of its freedom of movement it is liable to be displaced into the abdominal cavity. UBERON:0001159 UMLS:C0227391 UMLS:C0682612 colon sigmoideum galen:SigmoidColon pelvic colon sigmoid colon sigmoid flexure uberon