The support system is made up of supportive soft tissues known as muscles, tendons, ligaments, and inter-vertebral discs. The intelligent driving force behind this support system is the human brain stem's reticular system which controls all of the body's systems. The bi-product of vertebral articulation wear and tear or frank trauma is the fibrosis of repair. The dis-relationship of vertebrae causes altered tone of their supportive soft tissue both as cause and effect. We have a reason, and this is it, for chiropractors who specialize in restoring the neuro-spine with precision and accuracy.
Vertebrae are bodies in space.
Physical objects subject to the laws of nature and the scientific discipline of physics. A vertebra's position can be defined in terms of where it is located. Normal must be also assigned a position. We call it ZERO, a place from which to begin determining vector and magnitude from. Zero can also have attributes like being on the Vertical Axis, or the Center of Gravity.