Striped

Striped (striated, skeletal or voluntary muscle). The individual muscle fibers are transversely striated by alternate light and dark markings. Each fiber is made up of a number of myofibrils and enclosed in a fine membrane the sarcolemma (meaning muscle sheath). A number of fibers are massed together to from bundles; many of these bundles are bound together by connective tissue to from large and small muscles. When a muscles contracts it shortens, and each individual fiber take part in the movement by contracting. This type only contracts when stimulated to do so by the nervous system.