Multiple Choice
Acetylcholine
A) opens voltage-gated Na+ channels in skeletal muscle fibers, which causes depolarization of the muscle fibers
B) may decrease the permeability of the motor end plate to Na+ and K+ when combined with the receptor sites on the motor end plate
C) always depolarizes skeletal muscle fibers and postganglionic neurons
D) does both a and b
E) does both b and c
Correct Answer:
Verified
Correct Answer:
Verified
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