Which of the following is NOT true of the relaxation of a muscle fiber? Multiple Choice calcium release...

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Medical Sciences

Which of the following is NOT true of the relaxation of a musclefiber?

Multiple Choice

  • calcium release channels open allowing Ca to leave SR

  • ATP is needed to fuel the calcium ATPase pumping Ca into SR

  • Ca2+ moves from the sarcoplasm into the sarcoplasmic reticulum(SR)

  • Action potentials must cease

Answer & Explanation Solved by verified expert
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Answer Option A Calcium release channels open allowing Ca to leave SR Explanation A muscle is said to be contracted upon the stimulation from the nerve impulses The first and prime most event which takes place and due to which a muscle    See Answer
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