Question

The contraction and relaxation of ___________ muscles help us to move our bones.




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Answer 1

Answer:

Tendons I guess

I'm not sure

Answer 2

Answer:

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pairs of flexors and extensors.

Step-by-step explanation:

Muscles move body parts by contracting and then relaxing. Muscles can pull bones, but they can't push them back to the original position. So they work in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint.

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