How many sections is the spine divided into?

The spine is divided into five distinct sections, which are crucial for understanding human anatomy, particularly in the context of yoga and physical fitness. These sections are cervical, thoracic, lumbar, sacral, and coccygeal.

The cervical section consists of seven vertebrae (C1-C7) and supports the skull while allowing for a range of head movements. The thoracic section, comprised of twelve vertebrae (T1-T12), is where the ribs attach and is less mobile than the cervical region. The lumbar section includes five vertebrae (L1-L5) and is the largest segment, providing support for the lower back and bearing much of the body's weight.

Below the lumbar region, the sacral section is formed by five fused vertebrae that connect the spine to the pelvis, while the coccygeal section consists of typically four fused vertebrae that form the tailbone. Understanding the structure and function of these sections is essential for yoga practitioners in terms of aligning poses and preventing injuries.