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Skeletal muscles work in pairs because muscles can only contract (pull) and cannot expand (push). Thus, if you want to move one direction, you use one set of muscles and to move in the opposite direction you use the corresponding set of muscles.
skeletal muscles work in pairs because muscles can only contract (pull) and cannot expand (push).
Skeletal muscles will have a flexor and an extensor.

The flexor bends the joint.

The extensor straightens it out again.
Skeletal muscles work in pairs because muscles can only contract (pull) and cannot expand (push). Thus, if you want to move one direction, you use one set of muscles and to move in the opposite direction you use the corresponding set of muscles.

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Which structure contains pairs of opposing skeletal muscles?

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Do the hands contain pairs of opposing skeletal muscles?

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Skeletal muscles always work in antagonistic pairs.?

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