Muscle is composed of 75% water, 20% protein, and 5% minerals salts, glycogen and fat. 3 types of muscle 1. Skeletal - the muscle involved with movement. This muscle is under voluntary control, and attach to, and cover over, the bony skeleton Examples: Quadriceps in the front of the upper legs, and the biceps brachii … Continue reading What is Muscle & What are the 3 types?