Physical Evidence That Supports the Sliding Filament Theory of Muscle

question 13

Multiple Choice

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

• A) constant distance between Z lines during contraction.
• B) decreased width of the H band during contraction.
• C) increased width of the I band during contraction.
• D) decreased width of the A band during contraction.
• E) the I band + H band distance is constant during contraction.

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