the functional unit of the skeletal muscle is the
Skeletal muscle Muscle fibers are in turn composed of myofibrils. The myofibrils are composed of actin and myosin filaments, repeated in units called sarcomeres, which are the basic functional units of the muscle fiber. The sarcomere is responsible for the striated appearance of skeletal muscle, and forms the basic machinery necessary for muscle contraction.
Human skeleton The human skeleton performs six major functions; support, movement, protection, production of blood cells, storage of minerals, and endocrine regulation.