Muscle+Structure

===Muscle structure consist of Skeletal muscle, BUndle of muscle fibers, Muscle fiber (cell), Myofibril, Z-Line, Sarcomere, Myosin, and Actin. Skeletal muscle is a muscle thats connected to the skeleton to form part of the mechanical system that moves the limbs and other parts of the body. Bundle of muscle fibers is a muscle with sheets or bundles of cells called muscle fiber. They help with contractions. Muscle fiber (cell) is capable of contractions which produce movement or tensions in the body. Mainly composed of Proteins, Actin, and Myosin. Myofibril is any elongated contractile thread found in striated muscle cells. Z-Line are dense areas in Myofibrils that mark the beginning of the sarcomeres. The Actin laments of the sarcomeres are anchored in the z lines. Sarcomere is one of the segements into which a myofibril is divided. Myosin is the most common muscle, it is a globulin that combines with actin to form actomyosin. Actin is one of the proteins into which actomyosin can be split. It can exist in either a globular or a fibrous form.===