The back muscles are attached to the spine. The spine consist of bones called vertebrae. The vertebrae are joined together by the facet joints. Softer disks separate the vertebrae. They allow the spine to bend and flex.
They also act as cushion in between the vertebrae and absorb shock and vibration produced by walking and running. Nerves connecting the brain to the body make up the spinal cord.The vertebrae protect the spinal cord.
Nerves branch off from the spinal cor…