Some science behind the scenes

Vertebral column

In human anatomy, the vertebral column (backbone or spine) is a column of bones consisting of 24 articulating vertebrae and 9 fused vertebrae in the sacrum and the coccyx. It houses and protects the spinal cord in its spinal canal.  There are normally thirty-three (33) vertebrae in humans.

  • Tailbone - four coccygeal bones form the tailbone.
  • Sacrum - five are fused to form the sacrum (the others are separated by intervertebral discs) cervical  - with 7 vertebrae
  • thoracic – with 12 vertebrae
  • lumbar  - with 5 vertebrae