The document summarizes key aspects of the muscular system, including the three main muscle types (skeletal, cardiac, smooth), microscopic anatomy of skeletal muscle, the sliding filament theory of muscle contraction, energy pathways in muscle, and muscle naming conventions. Examples of muscle disorders like muscular dystrophy and myasthenia gravis are also briefly mentioned.
42. Left: Abduction – moving the leg away from the midline Above – Adduction- moving toward the midline Right: Circumduction: cone-shaped movement, proximal end doesn’t move, while distal end moves in a circle.