Human Upper Back and Shoulder Muscle Anatomy Diagram #3061271 (License: Personal Use)

This vintage-style black-and-white engraving depicts the complex musculature of the human upper back and shoulder region, including the trapezius, deltoid, infraspinatus, teres major/minor, and latissimus dorsi. Each muscle is carefully rendered with fine hatching to indicate fiber direction, depth, and attachment points, and numbered for identification in accompanying texts. The illustration reflects 19th- or early 20th-century anatomical teaching methods used in medical education.

Used in medical textbooks, anatomy courses, physical therapy resources, and fitness education to teach muscle structure, function, and relationships; ideal for users seeking visual aid for study, clinical reference, or rehabilitation planning.