In the human vertebral column there are normally thirty-three vertebrae; the upper twenty-four are articulating and separated from each other by intervertebral discs, and the lower nine are fused in adults, five in the sacrum and four in the coccyx or tailbone. The articulating vertebrae are named according to their region of the spine. There are seven cervical vertebrae, twelve thoracic vertebrae and five lumbar vertebrae.
- Length: 47.0cm
- Incomplete (21 vertebra)
- Includes occipital bone (back and lower part of the skull)
- Loosely strung