Why do muscles work in pairs?

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A Because they cannot push, they can only pull
B Because they cannot pull, they can only push
C Because they cannot work without their partner
D none of the above

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Answer: A. Because they cannot push, they can only pull

Muscles can only pull (contract), not push. So they work in pairs: one muscle pulls a bone one way and its partner pulls it back.

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Why do muscles work in pairs?

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