Understand your back The anatomy of the human spine Here it is. The spine consists of a series of bones called vertebrae which run from the base of ther skull down to the tail bone. Between each vertebrae lays in interverteral discs which act as shock absorbers and aid spine flexion partnered with the facet joints. The spinal cord runs through the middle of the spine with adjacant nerves serving the whole bodies nervous system. As you can see from the image your back can be