Muscle fibers have many nuclei because they are the result of several precursor cells joining together to make a mature muscle fiber.
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Q89: When the muscle looks "at rest," the
Q90: Only striated and cardiac muscles have triads;
Q91: Cardiac muscles require a stimulus from a
Q92: Cardiac fibers form a continuous electrically coupled
Q93: Smooth muscle can contract to shorter lengths
Q95: T-tubules are unique to muscle cells.
Q96: When smooth muscles have rhythmic contractions called
Q97: Because the heart is in almost constant
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Q99: Maintaining muscle tone is one of the
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