Printable shoulder muscles diagrams to help you study the muscles structure in human’s shoulder. We have five muscle diagrams of the shoulder. Let’s start by the anterior view of the diagram.
You can see in the shoulder muscle diagrams that the shoulder is one of the largest and most complex joints in the body. The shoulder joint is formed where the humerus (upper arm bone) fits into the scapula (shoulder blade), like a ball and socket. The muscles of the shoulder bridge the transitions from the torso into the head/neck area and into the upper extremities of the arms and hands. For that reason, and because of the dexterity of the shoulder joint itself, the musculature of the shoulder is complex, ranging from massive prime mover muscles to finer stabilizer and fixator muscles.
It is an extremely mobile joint, in which stability has been sacrificed for mobility. The bones of the pectoral girdle (clavicle and scapula) provide increased mobility to the shoulder joint by allowing it to move in all directions. Shoulder muscles move the shoulder blades and upper arm bones. The main shoulder muscles are trapezius, deltoid, pectoralis major and 4 rotator cuff muscles: subscapularis, supraspinatus, infraspinatus and teres minor.
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