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The human body has 3 muscles types of tissue, the skeletal smooth, and cardiac muscle. The cardiac muscle is found only in the myocardium which is located in the heart and helps in contraction. Voluntary messages sent from the nervous system attached to muscle fibers are the skeletal muscle. Involuntary movements triggered by impulses that travel through the autonomic nervous system are the smooth muscles which are found in the walls of hollow organs throughout the body. http://ift.tt/1JdawxP
