The document discusses the anatomy of the spine. It describes the main parts of the vertebrae including the body, vertebral foramen, pedicles, lamina, transverse processes, and articular processes. It notes the structures that pass through the vertebral canal including the conus medullaris, ligaments, and cauda equina. It also lists common developmental deformities of the spine such as hemivertebra, sacralization of the lumbar vertebra, and various types of spina bifida.