Which of the Following Events Occurs During the Lag Phase

question 81

Multiple Choice

Which of the following events occurs during the lag phase of a muscle twitch?

• A)Muscle fibers shorten.
• B)Cross-bridges form,move,release,and reform many times.
• C)The action potential is propagated from presynaptic to postsynaptic membrane.
• D)Calcium is pumped back into the sarcoplasmic reticulum.
• E)All of these events occur in the lag phase.

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