Question

How is muscle contraction reversed? A. Calcium binds to calmodulin and is quickly degraded to relieve calcium’s inhibition of tropomyosin. B. Calcium is neutralized by an influx of negatively charged ions, which block calcium from binding to myosin. C. Calcium ion pumps in the sarcoplasmic reticulum reduce the cytosolic calcium levels and tropomyosin blocks the myosin-binding site on actin. D. Calcium is pumped out of the cell to reverse the voltage and cause myosin to degrade

Answer 1

When the stimulation of the motor neuron providing the impulse to the muscle fibers stops, the chemical reaction that causes the rearrangement of the muscle fibers' proteins is stopped.

Step-by-step explanation:

This reverses the chemical processes in the muscle fibers and the muscle relaxes. hope this helps you :)