Upper Appendicular Skeleton. Pectoral Girdle. Composed of 2 clavicles & 2 scapulae Open in the back between the scapulae Sternum separates its bone in the front Supports the upper limbs An attachment for several muscles that move the upper limbs. Clavicle. Also known as- Collar Bone
Glenoid Cavity- located between the 2 processes. Articulates with the head of the humerus.
Deltoid tuberosity– v-shaped, rough area where _________ muscles attach to humerus