overlaps overlaps has developmental contribution from has developmental contribution from organism subdivision proctodeum anal region MIAA:0000042 posterior posterior end of organism EFO:0000847 EHDAA:2931 UBERON:0001353 WBbt:0006919 VHOG:0000395 EMAPA:16831 MA:0000329 NCIT:C32069 EHDAA2:0000122 SCTID:362680001 The anus and surrounding regions. Encompasses both internal and external regions, where present. MAT:0000042 terminal part of digestive tract