Between each vertebra comes out a nerve. The nervous system controls all our bodily functions. Due to the great complexity of the nervous system, only the most general and common relationships between the spine and nervous system is presented in this overview. A chiropractor trying to optimize communication between the brain, nervous system and body so that the body is best able to deal with problems and work with the highest possible capacity. Below are presented from top to bottom the different vertebrae and their nerve supply to the organs of the categories from the neck, middle back, lower back and pelvis.