Physical evidence that supports the sliding filament theory of muscle contraction includes

A) Increased width of the H band during contraction.
B) Decreased distance between Z lines during contraction.
C) Increased width of the I band during contraction.
D) Decreased width of the A band during contraction.
E) An increased distance between Z lines during contraction.


B) Decreased distance between Z lines during contraction.

Anatomy & Physiology

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