The human body is made up of about 40% of skeletal muscle, each muscle fiber varies in length. Muscle fibers have a membrane called sarcolemma which has its own plasma membrane, followed by a layer of polysaccharides. Every muscle fiber contains thousands of myosin and actin filaments that are made up of different proteins and allow for muscle contraction. Myosin and actin filaments are aligned next to each other with cross bridges that allow for interaction. Myosin and actin filaments are kept in place by a large protien called Titian that provides a stable structure. The actual myofibrils which are composed of many myosin filaments have a fluid called sarcoplasm between each myofibril. Sarcoplasm contains elements and organelles, one being
