Cytological Examination of Resting and Contracted Muscle Provides Important Support

question 19

Multiple Choice

Cytological examination of resting and contracted muscle provides important support for the sliding filaments model for how skeletal muscle contracts.This evidence includes the observation that during contraction the

• A)Z lines move farther apart.
• B)lengths of the thick filaments shorten significantly.
• C)lengths of the thin filaments shorten significantly.
• D)I bands get longer.
• E)H zone becomes narrower.

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