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