This document discusses muscle roles in movement, types of muscular contraction, and the shoulder girdle. It defines prime movers, antagonists, fixators, and synergists in muscle movement. It describes concentric and eccentric contractions. It also outlines the bones and muscles that make up the shoulder girdle, including the sternum, clavicles, and scapulas, and names muscles like the trapezius, levator scapulae, and rhomboids. It lists the prime movers for movements of the shoulder girdle such as elevation, depression, and abduction.

1. Joints and Movement

4. The Shoulder Girdle