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Unformatted text preview: has 4 parts with separate origins-these 3 muscles work together to flex the knee and are antagonistic to the quads-large, superficial calf muscle with 2 heads-deep to gastrocnemius- small muscle deep to heads of gastrocnemius; forms back of popliteal fossa-deep to external intercostals and fibers that run in opposite directions-most superficial layer and strongest of abdominal muscles-deep to external oblique, 2 nd layer- deepest layer of abdominal wall-entirely covered by aponeuroses of the other 3 abdominal muscles...
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