Each
muscle is a bundle of muscle fibers, wherein each cell is surrounded by
connective tissue, muscle boost x where the lymph and blood vessels and nerve fibers. The
peculiarity of the muscle fibers is that they contain up to a thousand or more
myofibrils (long strands of protein nature). Each myofibril - about 2 thousand
parallel molecules of two proteins (actin and myosin). Actin and myosin provide
skeletal muscle contraction, moving relative to each other. Myosin has the
ability to break down ATP with release of energy, which enables muscle
contraction. In a relaxed muscle actin and myosin testo boost x do not interact. Muscle
contraction - this convergence of molecules of actin and myosin in response to
a nerve impulse. There are numerous power system development.