Posterior View of Human Back Muscles and Nerves - Medical Anatomy Diagram #3294957 (License: Personal Use)

This medical illustration depicts the posterior musculoskeletal anatomy of the upper torso, including the trapezius, latissimus dorsi, rhomboid major and minor, and erector spinae muscles. The dorsal scapular nerve is emphasized in yellow, tracing its path from the brachial plexus to the scapular region. Muscle fiber orientation and layering are rendered to clarify functional relationships and clinical relevance.

Used in anatomy textbooks, physical therapy resources, orthopedic training modules, and patient education materials to explain muscle function, nerve innervation, and common sources of upper back pain or dysfunction.