How many sections does the spine have?

The human spine consists of five distinct sections. These sections are categorized as follows: the cervical spine, thoracic spine, lumbar spine, sacral spine, and coccygeal spine.

The cervical spine includes the first seven vertebrae that support the skull and allow for a wide range of head movements. The thoracic spine is made up of twelve vertebrae located in the upper and mid-back region, which anchors the ribs. The lumbar spine consists of five vertebrae in the lower back, playing a crucial role in bearing weight and providing flexibility. The sacral spine is a single structure comprised of five fused vertebrae, connecting the spine to the pelvis. Lastly, the coccygeal spine, commonly known as the tailbone, consists of four fused vertebrae.

This classification into five sections is essential for understanding the anatomy of the spine and its function in providing both support and mobility. Each section has unique characteristics and roles that are critical for overall spinal health and function.