Latissimus dorsi: Learn about the latissimus dorsi or

Learn about the latissimus dorsi or "lats" muscles, the largest muscles on your back. Find out how they help you move your shoulders, breathe, and prevent injuries, and how to strengthen them with exercises. The latissimus dorsi muscle is a member of the superficial layer of the extrinsic back muscles , along with the levator scapulae, trapezius, and rhomboid muscles. The latissimus dorsi muscle is one of the scapular motion muscles, so it serves a functional purpose. Learn about the latissimus dorsi muscle, the widest muscle in the human body, that covers the posterior trunk and acts on the shoulder joint and respiration. Find out its origin, insertion, innervation, blood supply, functions, clinical notes and more. Interactive 3D model of the latissimus dorsi muscle and information on its origin, insertion, action, innervation, and blood supply.