Provide one word answers to the statements given below.
Help in the movement of body by contraction and relaxation.

Explanation

**Step-by-Step Text Solution:**

1. **Identify the Function**: The question asks for a one-word answer that describes something that helps in the movement of the body through contraction and relaxation.

2. **Recall Relevant Knowledge**: In the human body, the structures responsible for movement are muscles. Specifically, the type of muscles that help in voluntary movements are called skeletal muscles.

3. **Define the Key Term**: Skeletal muscles are the muscles that are attached to bones and are responsible for moving the skeleton. They work by contracting (shortening) and relaxing (lengthening), which allows for movement.

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