develops from sacral vertebra sacral segment SCTID:361773005 FMA:12526 neuronames:1706 galen:SacralVertebra MA:0000313 segment of sacrum EMAPA:18336 AAO:0000552 XAO:0003078 Wikipedia:Sacrum NCIT:C12853 EDITOR_NOTE todo - AAO placement to be confirmed by AAO curators (the AAO class may also include modified ribs) A vertebra bone that is part of the sacral region of the vertebral column. vertebra abdominal segment bone bone of dorsum sacral vertebra cartilage element sacral vertebra endochondral element