Functions of muscular skeletal system do in the human body?
Skeletal muscle structure Skeletal muscle fibers are multinucleated, with the cell’s nuclei located just beneath the plasma membrane. The cell is comprised of a series of striped or striated, thread-like myofibrils. Each myofibril there are protein filament that are anchored by dark Z lines. The fiber is one long continuous thread-like structure. The smallest cross section of skeletal muscle is called a sarcomere which is the functional unit within the cell. It extends from one Z line to the next attached Z line. The individual sarcomere has alternating thick myosin and thin actin protein filaments. Myosin forms the center or middle of each sarcomere. The exact center of the sarcomere is designated the M line. Thinner actin filaments form a zig zag pattern along the anchor points or Z line. Upon stimulation by an action potential, skeletal muscles perform a coordinated contraction by shortening each sarcomere. The best proposed model for understanding contraction is the sliding filamen
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