The transverse lines run horizontal through the fused sacral vertebrae
transverse lines
cervical, thoracic, lumbar, sacral and coccydial
Cervical Thoracic Lumbar Sacral
cervical, thoracic, lumbar, sacral and coccydial
The lumbosacral junction is located in the lower center of the back and between the hips. It consists of the L5 vertebral and the first sacral vertebral body.
In the fetal and neonatal spine, the vertebral column curves of the cervical, thoracic, lumbar, and sacral all oriented as anterior concave curves. and are designated primary curves. To get the state legislature to adopt rules that require sequential lineups
cervical, thoracic, lumbar, and sacral curvature.
Primary curvature is the concave curve of the fetal vertebral column. This is apparent in the adult thoracic and sacral regions.
Cervical curveAtlasAxisC3 to C7Thoracic curveT1 to T12Lumbar curveL1 to L5Saccrum curveS1 to S5Coccyx curve
Sacralization is the fusion of the last lumbar vertebrae with the first segment of the sacrum.
The vertebral column is divided into five regions: cervical (neck), thoracic (chest), lumbar (lower back), sacral (pelvic), and coccygeal (tailbone). Each region has a specific number of vertebrae that provide support and flexibility to the spine.
The thoracic and sacral regions of the vertebral column typically retain a posteriorly convex curvature in the adult. The thoracic region curves outward due to the shape of the ribs attaching to the spine, while the sacral region naturally curves to accommodate the weight of the upper body.