Which of the Following is Responsible for Muscle Relaxation

Question

Which of the following is responsible for muscle relaxation?
A) The sarcomere runs out of ATP.
B) Calcium floods the area of the sarcomere, allowing for the interaction of actin and myosin.
C) Calcium is pumped back into the sarcoplasmic reticulum.
D) Acetylcholinesterase in the neuromuscular junction is depleted.

Accepted Answer

Muscle relaxation is due to the pumping back of calcium into the sarcoplasmic reticulum, as this prevents the interaction of actin and myosin, leading to muscle relaxation.