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When a skeletal muscle contracts to cause a given movement, the more movable end of attachment of the muscle is termed its. origin. insertion. antagonist. synergist. When a muscle contracts, it usually has an opposing muscle that can cause movement in the opposite direction.
Skeletal Muscles Bodily movement is carried out by the interaction of the muscular and skeletal systems. For this reason, they are often grouped together as the musculo-skeletal system. Muscle is attached to bone by tendons and other tissues, and exerts force by converting chemical energy into tension and contraction. Skeletal muscles which cause movement of a joint are connected to two different bones and contract to pull them together.