The spine can be divided into 4 parts: cervical, thoracic, lumber and sacral region. The cervical spine comprises the first 7 vertebrae of the spinal column, which form the neck.
The cervical spine is highly mobile compared to other regions of the spine such as thoracic or lumbar spine. In contrast to other parts of the spine, the cervical spine has transverse foramina in each vertebra through which the vertebral arteries supply blood to the brain. Based on the structural diversity in the cervical spine, it can be divided into two parts: upper and lower cervical spine.