Answered

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Which process must occur for a muscle to be able to relax?

A. Myosin and actin must attach to each other.
B. A nerve must initiate an action potential in the muscle fiber.
C. The concentration of calcium in the myofibril must decrease.
D. The amount of ATP in the neuromuscular junction must increase.

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Final answer:

To relax a muscle, a nerve initiates an action potential, the neurotransmitter is degraded, and the calcium concentration decreases.


Explanation:

The process that must occur for a muscle to be able to relax is:

  1. A nerve must initiate an action potential in the muscle fiber.
  2. The neurotransmitter acetylcholine (ACh) must be degraded by the enzyme acetylcholinesterase.
  3. The calcium concentration in the myofibril must decrease as it is reabsorbed by the sarcoplasmic reticulum.

Learn more about Muscle relaxation here:

https://brainly.com/question/33888889


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