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A Patient Is Hospitalized with Muscle Spasms Caused by Failure

Question 20

Multiple Choice

A patient is hospitalized with muscle spasms caused by failure of back muscles to relax after contraction. Which of the following would be most likely to help?


A) injecting calcium into the muscle cell, because it is not being released from the sarcoplasmic reticulum
B) inducing tropomyosin-troponin complex to block the myosin binding sites on actin
C) increasing the amount of acetylcholine at the synapses between motor neurons and muscle cells
D) depolarizing the motor neurons to send an action potential to the muscle cells

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