The correct temporal sequence for events at the neuromuscular junction is
A. action potential in the motor nerve;
depolarization of the muscle end plate;
uptake of Ca2+ into the presynaptic nerve terminal
B. uptake of Ca2+ into the presynaptic terminal;
release of acetylcholine (ACh);
depolarization of the muscle end plate
C. release of ACh;
action potential in the motor nerve;
action potential in the muscle
D. uptake of Ca2+ into the motor end plate;
action potential in the motor end plate;
action potential in the muscle
Select your answer:
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