Question

why are at least two muscles needed to move a bone at a joint in one direction​

Answer 1

Explanation:

A single muscle can only pull, it cannot push. Thus, muscles work in pairs to move a bone. When one muscle contracts, it pulls the movable bone. When another muscle of the pair pulls, it brings the bone back to its original position.

Answer 2

Answer:

Hi ! Let me help u with the answer

Explanation:

A single muscle can only pull, it cannot push. Thus, muscles work in pairs to move a bone. When one muscle contracts, it pulls the movable bone. When another muscle of the pair pulls, it brings the bone back to its original position.

I hope this answer helps you.