part_of part of part of anteriorly connected to system vertebral bone 1 vertebral bone 2 NCIT:C32240 FMA:12520 TAO:0001168 The second vertebral bone in the vertebral column. UMLS:C0004457 axis vertebra uberon EMAPA:19432 ZFA:0001168 SCTID:181819004 MA:0001422 GAID:237 Wikipedia:Axis_(anatomy) EHDAA:10608 UBERON:0001093 axis (CII) MESH:D001368 cervical axis vertebra 2 vertebra