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1.Muscles and Joints. Muscles provide the tug on the bones needed to bend, straighten, and support joints. Muscles can pull on bones, but they can't push them back to their original position, so the muscles work in pairs of flexors and extensors.

2.Bones do not move on their own; muscles move our bones by pulling on them. Muscles cannot push against the bone, so muscles typically come in pairs (known as antagonists), one muscle pulls the bone one way and the antagonistic muscle pulls the bone back the other way.

RkWatsonid RkWatsonid · Answer 2

Answer:

1.Your bones and muscles work together to support every movement you make on a daily basis. When you are physically active you strengthen your muscles.

2.Bones shape our body and help us to stand up straight. Muscles are attached to bones; they help us walk and run and smile. All the bones in our body make up our skeleton – from the top of our skull to the tips of the phalanges at the end of our toes.

3.Muscles provide the tug on the bones needed to bend, straighten, and support joints. Muscles can pull on bones, but they can't push them back to their original position, so the muscles work in pairs of flexors and extensors. The extensor muscle relaxes and stretches as the flexor muscle contracts to bend the joint.

Explanation:

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