Which statement best describes the sliding filament theory?

easy

AActin and myosin filaments shorten by breaking into smaller pieces.

Actin filaments slide past myosin filaments, increasing overlap and shortening the sarcomere.

CMyosin moves away from actin to lengthen the sarcomere.

DThe sarcomere shortens because the Z lines dissolve.

ECalcium causes actin to be converted into myosin.

Explanation

Contraction occurs by sliding: myosin cross-bridges pull actin inward so overlap increases, shortening the sarcomere without changing filament lengths.

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Source: entermedschool.org

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