The work will be in the willpower, controlled by the nervous system somatic (SNS) so the body can force or in the willpower.Muscle function based on bones to movement. Muscle based on bone will work as a dual antagonism, called antagonism it absorbed. So when muscle contraction, one side. The muscle is relaxed.The contraction of the muscles, causing tension bone movement.? Because between the muscles and bones of the ligaments cling.Ligaments are connective tissue with toughness, strong and durable tensile or support the weight.