in taxon Bilateria organism subdivision dorsum NCIT:C13062 UBERON:0001137 BTO:0001713 GAID:30 SCTID:123961009 dorsal part of organism back CALOHA:TS-2223 Wikipedia:Dorsum_(anatomy) A major subdivision of an organism that is the entire part of the organism dorsal to a horizontal plane and bounded on one side by the same transverse plane. In vertebrares this includes the vertebral column.. EFO:0001405 FMA:14181 galen:Back MESH:D001415 back of body proper