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ludmilkaskok [199]
2 years ago
10

a muscle fiber contracts when myosin filaments pull actin filaments closer together and thus shorten sarcomeres within a fiber.

When all the sarcomeres in a muscle fiber shorten, the fiber contracts
Chemistry
1 answer:
kakasveta [241]2 years ago
7 0

Answer:According to the sliding filament theory, a muscle fiber contracts when myosin filaments pull actin filaments closer together and thus shorten sarcomeres within a fiber.

Explanation:

No need for an explanation if i just answered it

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