The spine or backbone is bony structure that supports our body to sit, stand, walk, twist and bend. The three primary roles of the spinal cord are to send motor commands from the brain to the body, send sensory information from the body to the brain, and coordinate reflexes.
Cervical spine is the top part of your spine, has seven vertebrae (C1 to C7). These neck vertebrae allow you to turn, tilt and nod your head, also provides support for the weight of your head.