Which of the following events occurs after all the other steps listed when describing the stimulation of a skeletal muscle fiber?
a. ACh binds with receptors on the muscle cell membrane, opening sodium channels.
b. ACh diffuses across the cleft of the junction.
c. ACh is released by exocytosis.
d. Calcium diffuses into the terminal button.
e. Voltage-gated channels for calcium in the axon terminal are opened.
A
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