Which Statement Regarding the Relaxation Phase of a Muscle Twitch

question 33

Multiple Choice

Which statement regarding the relaxation phase of a muscle twitch is true?

• A) The phase begins at stimulation and typically lasts about two milliseconds.
• B) Muscle tension falls to resting levels.
• C) The action potential sweeps across the sarcomere during this period.
• D) Tension rises to a peak.
• E) Cross-bridges are interacting with active sites on actin filaments throughout this period.

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