Question

6. How do muscles help in the movement of your arm?​

Answer 1

Answer:

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. Then, when the movement is completed, the flexor relaxes and the extensor contracts to extend or straighten the limb at the same joint.

Answer 2

Answer:

I think there are three muscle used in moving an arm

Explanation:

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