What does the vertebrae change as you Go down?

As you move down the vertebral column from the cervical to the lumbar region, the vertebrae generally increase in size and mass. This change accommodates the greater weight-bearing and load-bearing responsibilities of the lower spine. Additionally, the shape of the vertebrae becomes more robust and the intervertebral discs become thicker to provide better support and flexibility. The curvature of the spine also changes, with the cervical and lumbar regions being more lordotic, while the thoracic region is kyphotic.