• Question: what do you know about muscles and how would you explain it?

    Asked by ninjaturtle to Joe, Juan, Kate, Rory, Rosie on 17 Mar 2014. This question was also asked by .
    • Photo: Joe Sweeney

      Joe Sweeney answered on 17 Mar 2014:

      If you put your hands together like you’re praying and then interlock your fingers, you’ve got a good model of a muscle. If you make your hands go tight, it’s hard to pull the fingers apart, if you make your hand go loose the fingers come apart easily. That’s how muscles work: they contain fibres that are interlocked and they can be pulled together (which is a contraction) or pulled apart (an extension) depending on which chemicals are around

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