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Biology 15 Online
OpenStudy (anonymous):

Which statement best describes how muscles help the body move?

thomaster (thomaster):

are there any options?

OpenStudy (anonymous):

In case there are no options, I'd say something along these lines: By contracting and expanding themselves, muscles push and pull bones forward and backward.

OpenStudy (dean.shyy):

This may help: http://is.gd/TLlHiE

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