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maria [59]
3 years ago
10

What happens to actin and myosin when muscles relax?

Health
1 answer:
7nadin3 [17]3 years ago
4 0
ATP-driven pumps will move Ca ++<span> out of the sarcoplasm back into the SR. This results in the “reshielding” of the </span>actin<span>-binding sites on the thin filaments. Without the ability to form cross-bridges between the thin and thick filaments, the </span>muscle<span>fiber loses its tension and relaxes.</span>
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