The upper back refers to the area of the back that is located between the neck and the lower back. It includes the thoracic spine, which consists of twelve vertebrae, and is responsible for supporting the rib cage and protecting vital organs. This region plays a crucial role in posture and movement, allowing for the rotation and extension of the upper body. Muscles in the upper back, such as the trapezius and rhomboids, help stabilize the shoulder blades and facilitate arm movement. Maintaining a strong and flexible upper back is important for overall physical health and can help prevent discomfort and injuries.