The structural theory that explains how a muscle fiber contracts is called the ________ theory.

Name: The structural theory that explains how a muscle fiber contracts is called the ________ theory.
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The sliding filament theory explains that the interaction between actin and myosin filaments causes the muscle fiber to contract. This theory proposes that during muscle contraction, the actin filaments slide over the myosin filaments, causing the sarcomere to shorten.

The Structural Theory That Explains How a Muscle Fiber Contracts