The upper back, also known as the thoracic spine, lies between the neck and the lower back. It is made up of twelve thoracic vertebrae (T1–T12) and serves as a strong and stable support structure for the body. This region plays a crucial role in anchoring the rib cage, which protects vital organs such as the heart and lungs and allows them to function efficiently. The upper back’s strength and rigidity are essential for posture, spinal alignment, and overall upper body stability.