How many thoracic vertebrae are present in the vertebral column?

The vertebral column consists of 33 vertebrae divided into several regions: cervical, thoracic, lumbar, sacral, and caudal. Specifically, the thoracic region contains 12 vertebrae. These thoracic vertebrae are labeled T1 through T12 and are characterized by their attachment to the ribs, which plays a critical role in protecting the heart and lungs.

Each thoracic vertebra has features that accommodate these functions, including facets for rib articulation and a longer spinous process compared to the cervical and lumbar vertebrae. This structure not only allows for the connections to the ribs but also provides stability and support to the upper body.

Understanding the specific number of thoracic vertebrae is essential in both anatomy and physiology, as it has implications for movement, stability, and the overall structure of the spine.