vertebra number
true
vertebra_number
uberon
x vertebra_number N if and only if (i) x is a vertebra, and (ii) x is vertebra number N in a series of vertebras repeated along an anterior-posterior axis, with vertebra_number 1 being the anteriormost vertebra (also known as the atlas).
vertebra_number
UBPROP:0000107
anterior_to
vertebra