The formula for vertebral column is $C_{7}\ T_{12}\ L_{5}\ S_{1}\ C_{1}$ $C_{7}$ – 7 bones in cervical vertebrae $T_{12}$ – 12 bones in thoracic vertebrae $L_{5}$ – 5 bones in lumbar vertebrae $S_{1}$ – 1 bone in saccral vertebrae $C_{1}$ – 1 bone in coccyx vertebrae