On the other hand, orthotics are a functional device, designed to correct and optimize our foot function. Some insoles also feature an arch support, however they tend to be mostly made of soft materials. As a result, the support they provide is often too weak to have any effect.
Vertebrae and Cervical Spinal Nerves. The cervical spine (sometimes abbreviated as c-spine in the medical world) begins at the base of the skull. Seven vertebrae make up the cervical spine with eight pairs of cervical nerves. The individual cervical vertebrae are abbreviated C1, C2, C3, C4, C5, C6, and C7. The cervical nerves are also abbreviated; they are C1 through C8.
The cervical spine has seven vertebral bodies (segments). The top two segments are unique: 1  The first cervical segment (called the atlas) is a ring that does not have a vertebral body.2  It is attached to the second vertebral body (the axis), which acts as a post that the first vertebral ring rotates around.3  Most of the rotation in the neck is located in these top two segments.he vertebral bodies of the lower back are the largest of the spine because they bear the majority of the body's weight. The paired facet joints on the back of the vertebral segments are aligned so that they allow flexion/extension but not a lot of rotation. Most causes of back pain originate in the lumbar spine.