muscular system function is to allow the movement of bones and internal organs. There are 3 types of muscles:
a) striated or skeletal muscle: voluntary, with highly differentiated cells into a cylinder. Move the most important muscles, has stretch marks. These fibers are the result of mergers of individual cells to form a muscle fiber or multinuclear syncytium (cytoplasm together).
b) cardiac muscle: involuntary, does not form a syncytial tissue as above, but that their cells are separated by adhesion molecules, has stretch marks. It is exclusive of the heart.
c) Smooth muscle: involuntary, has no stretch marks. Allows the movement of blood vessels and other organs. Actin and myosin are disordered and are not ordained as beams above the other tissues.
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