How Is The Pectoral Girdle Attached To The Trunk?

How Is The Pectoral Girdle Attached To The Trunk? The shoulder, or pectoral, girdle is composed of the clavicles (collarbones) and the scapulae (shoulder blades). In humans the clavicles join the sternum (breastbone Which joints attach the pectoral girdle to the trunk? Sternoclavicular joint. This joint is the point where your clavicle meets your sternum.