This collection includes free and printable shoulder muscle diagrams which provide a simple and easy-to-understand overview of the location of the major internal muscles of the shoulder. The shoulder has about eight muscles that attach to the scapula, humerus, and clavicle. For more detailed anatomy of the muscles, check out the following diagrams below.
As you can see on the shoulder muscle diagram, the primary scapulohumeral muscles include the four muscles that make up the rotator cuff (supraspinatus, infraspinatus, teres minor, subscapularis) and deltoid. The rotator cuff functions to provide stability and maintain alignment of the shoulder joint when you move your arms. Surrounding the rotator cuff muscles are many groups of muscles that work together to produce the various movements of the shoulder.
The muscles in the shoulder aid in a wide range of movement and help protect and maintain the main shoulder joint, known as the glenohumeral joint. The largest of these shoulder muscles is the deltoid. It stretches across the top of the shoulder from the clavicle in the front to the scapula in the back. Different fibers of the muscle are responsible for different actions including raising the arm and assisting the pectoralis muscle in the chest. One important function of the deltoid is preventing joint dislocation when a person carries heavy objects.
These anatomy charts will be useful and comprehensively great for teaching the anatomy of the shoulder muscles. The diagrams given above show the shoulder muscles which will help you in understanding the muscular system of the human body. Check back soon for more anatomy diagrams!