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Shoulder - Wikipedia, the free encyclopedia |
 | | In human anatomy, the shoulder joint is composed of three bones: the clavicle (collarbone), the scapula (shoulder blade), and the humerus (upper arm bone). |
 | | The glenohumeral joint, to which the generic term "shoulder joint" usually refers, is a ball-and-socket joint that allows the arm to rotate in a circular fashion or to hinge out and up away from the body. |
 | | Tendons are tough cords of tissue that attach the shoulder muscles to bone and assist the muscles in moving the shoulder. |
| en.wikipedia.org /wiki/Shoulder (331 words) |
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