An individual vertebra is made up of several parts. The body of the vertebra is the primary area of weight bearing and provides a resting place for the fibrous discs which separate each of the vertebrae. The lamina covers the spinal canal, the large hole in the center of the vertebra through which the spinal nerves pass. The spinous process is the bone you can feel when running your hands down your back. The paired transverse processes are oriented 90 degrees to the spinous process and provide attachment for back muscles.
There are four facet joints associated with each vertebra.
A pair that face upward and another pair that face downward.
These interlock with the adjacent vertebrae and provide stability to the spine.
The vertebrae are separated by intervertebral discs which act as cushions between the bones.