What prevents the ACh from continuing to stimulate the muscle?
A) Tropomyosin blocks the myosin.
B) Calcium returns to the sarcoplasmic reticulum.
C) Acetylcholinesterase destroys the Ach.
D) None of the listed responses is correct.
C
Explanation:
A) Tropomyosin does block the myosin once the calcium is removed.
B) Calcium does return to the sarcoplasmic reticulum after the ACh is removed.
D) One of the listed answers is correct.
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