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Vaselesa [24]
3 years ago
5

When a muscle is working, it _________, or tightens, thus making itself stronger.

Physics
1 answer:
Cloud [144]3 years ago
8 0

Answer: contracts, its a synonym.

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Shtirlitz [24]

Answer:

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3 years ago
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Alex73 [517]
<h3><u>Answer;</u></h3>

A. Skeletal muscles, which are made of fibers, nerves, and blood vessels, contract in order to make the body move.

<h3><u>Explanation</u>;</h3>
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  • <em><u>Skeletal muscles are responsible for moving the body. The skeletal muscle contractions pull on tendons, which as attached to bones. When the skeletal muscle contraction causes the muscle to shorten, the bone and thus the body par will move. </u></em>
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