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What happens to the width of a light band after a muscle contracts
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What happens to the width of a light band after a muscle contracts

User Bsalex
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Answer:

For a muscle cell to contract, the sarcomere must shorten. However, thick and thin filaments—the components of sarcomeres—do not shorten. ... The A band stays the same width and, at full contraction, the thin filaments overlap. When a sarcomere shortens, some regions shorten whereas others stay the same length.

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User Saera
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