The term "thoracic" refers to the region of the body that is located between the neck and the abdomen. It primarily encompasses the chest area, which houses vital organs such as the heart and lungs. The thoracic cavity is protected by the rib cage and is essential for respiratory functions. In anatomy, the thoracic spine consists of twelve vertebrae, labeled T1 to T12, which provide support and flexibility to the upper body. The thoracic region also includes structures like the sternum and costal cartilage, which play important roles in the respiratory system by facilitating breathing movements.