Muscles of the back. Labels: 50, latissimus dorsi; 51, trapezius; 52, deltoid. The muscles of the back are in 5 layers, one beneath another. The two largest and most superficial are the trapezius and the latissimus dorsi.

Muscles of the Chest and Abdomen

Muscles of the back. Labels: 50, latissimus dorsi; 51, trapezius; 52, deltoid. The muscles of the back…