Which section of the spine contains 12 vertebrae?

The thoracic section of the spine is composed of 12 vertebrae, which are numbered T1 through T12. This section is located in the middle part of the spine and connects to the ribs, providing structural support and protection for vital organs in the chest, such as the heart and lungs. The thoracic vertebrae are larger and stronger than the cervical vertebrae, given their role in bearing the weight of the upper body and allowing for a limited range of motion while maintaining stability. Understanding the structure and function of the thoracic spine is crucial for recognizing its role in overall spinal mechanics and in the assessment of spinal injuries.