A Bit of Biology
The spinal column is the tree of life. It is unquestionably an architectural masterpiece.
- It is composed of thirty-three short super-imposed bones called VERTEBRAE.
- There are:
- 7 cervical vertebrae
- 12 dorsal or thoracic vertebrae
- 5 lumbar vertebrae
- 5 sacrum vertebrae
- 4 coccyx vertebrae
- Between each vertebrae we find DISKS which are made of Cartrilage that serve as “shock absorbers”. This padding looks like a doughnut or a perforated wheel.
- There are holes in each vertebrae that forms the rachidian or SPINAL CANAL where we find the spinal cord.
- Attached to the spinal cord and protruding between the vertebrae are thirty-one pairs of nerves:
- 8 pairs of cervical nerves
- 12 pairs of thoracic nerves
- 5 pairs of lumbar nerves
- 5 pairs of sacral nerves
- 1 pair of coccygeal nerves.
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