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9 January, 14:22

Which of these bands or lines narrows when a skeletal muscle contracts?

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  1. 9 January, 18:01
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    When a skeletal muscle contracts, the band H, and the band I narrow. In this process, the band H disappears and the band I compressed. In the band, I of the sarcomere the actin filaments that are born from the discs of Z are distinguished, where there is alpha-actinin, which is the protein that binds actin and titin.
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