There are many skeletal muscles in your body. For skeletal muscles to move a limb, like your arm, in either direction, the muscles must work:

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asked Nov 17, 2018 217k views

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Bon Ryu · Answer 1 · 2018-11-22T06:03:04+0000

To move a limb, muscles must contract to pull, and others must relax to allow the limb to move: for example, triceps relaxing as the biceps pull the forearm up

There are many skeletal muscles in your body. For skeletal muscles to move a limb, like your arm, in either direction, the muscles must work:

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