Science, asked by shannasteel1, 2 months ago

What happened to your muscles I your upper arm and lower leg when they contract

Answers

Answered by shajidajui13
0

Answer:

When a muscle contracts or shortens, it pulls on both its origin and insertion in bone and causes the joint to move. To return the joint to its original position, the reciprocal muscle on the other side of the joint must contract and shorten. Muscles don't push joints, they only shorten and pull

Explanation:

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