Which of the following describes an event that occurs in the latent phase of a muscle contraction?
A. Calcium is actively transported back to the sarcoplasmic reticulum and the muscle produces acetylcholinesterase to remove the acetylcholine from the receptors.
B. The muscle cell shortens.
C. Acetylcholine is released and fits into the receptors on the muscle cell.
D. The muscle goes back to shape because it is elastic.
Answer: C
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