The nerve roots stem from the spinal cord like tree branches through foramen in the vertebrae. Each nerve root transmits signals (nerve impulses) to and from the brain, shoulders, arms, and chest. A vascular system of 4 arteries and veins run through the neck to circulate blood between the brain and the heart. Joints, muscles, and ligaments facilitate movement and serve to stabilize the structure.
Chiropractors use hands-on spinal manipulation and other alternative treatments, the theory being that proper alignment of the body's musculoskeletal structure, particularly the spine, will enable the body to heal itself without surgery or medication. Manipulation is used to restore mobility to joints restricted by tissue injury caused by a traumatic event, such as falling, or repetitive stress, such as sitting without proper back support.