Multiple Choice
After a muscle cell contracts,what must occur for the muscle to stop contracting?
A) Calcium ions must be pumped back into the endoplasmic reticulum.
B) Calcium ions must be pumped out of the muscle cell.
C) Calcium ions must flow out of the endoplasmic reticulum.
D) Calcium ions must flow into the muscle cell.
E) Calcium ions must flow out of the muscle cell.
Correct Answer:
Verified
Correct Answer:
Verified
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