SamariaF
SamariaF SamariaF
  • 17-05-2017
  • Biology
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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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nidxxxwhal
nidxxxwhal nidxxxwhal
  • 20-05-2017
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
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