is a shoulder muscle that appears serrated (jagged) and sits at the front of the body. “The shoulder has a unique architecture, including an intricate muscular anatomy,” Fant says. “Each individual ...

The shoulder is made up of three bones: the scapula (shoulder blade), clavicle (collarbone) and humerus (upper arm bone). Two joints in the shoulder allow it to move: the acromioclavicular joint, ...