How many vertebrae are present in the thoracic spine?

The thoracic spine consists of 12 vertebrae, which are numbered from T1 to T12. This region of the spine is characterized by the attachment of the ribs, which contribute to the thoracic cage that protects vital organs like the heart and lungs. Each thoracic vertebra articulates with a pair of ribs, enhancing stability and structural support for the upper body. The configuration and number of these vertebrae reflect an important aspect of human anatomy, as they provide a balance between mobility and support. This is in contrast to other regions of the spine, such as the cervical spine, which has 7 vertebrae, and the lumbar spine, which contains 5 vertebrae. Therefore, recognizing that the thoracic spine specifically has 12 vertebrae is crucial for understanding spinal anatomy and its relationship to the function of the upper body.