The human vertebrae have a variety of forms, cervical, thoracic, lumbar, sacral and caudal vertebrae are all have different forms. So to determine the shape of the vertebrae, it depends on which part of the vertebrae, as follows: 1. Cervical vertebrae: the vertebral body is relatively small, the spinal canal is relatively wide, and there is a transverse foramen on the transverse process. 2. Thoracic vertebrae: the vertebral body is relatively larger than the cervical vertebrae, and the width of the spinal canal is also medium, accompanied by a long spinous process at the back. 3. Lumbar vertebrae: the vertebral body is larger, and it is the largest vertebra in the human body, and relatively speaking, the spinal canal is relatively small. 4. fused together, there is a sacral foramen at the back, there are sacral nerves emanating from this place. 5.Coccyx: it consists of 3-5 pieces of coccyx fused together to form a complete coccyx.