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How do muscles help us move?

Do you know that almost half of your body weight is made up of muscles! For example, if you weigh 40 kilograms, about 20 kilograms constitute pure muscle! Muscles are the part of our body that allow us to move. They are made up of special tissues that can contract when they receive a signal from the brain.

By |2011-01-03T08:28:15+00:00January 3, 2011|Biology|Comments Off on How do muscles help us move?
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