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.
Anatomy of the spine. The spinal column is made up of 33 vertebrae that are separated by spongy disks and classified into distinct areas: The cervical area consists of 7 vertebrae in the neck. The thoracic area consists of 12 vertebrae in the chest. The lumbar area consists of 5 vertebrae in the lower back.