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Botulinum Toxin Inhibits the Presynaptic Release of Acetylcholine

Question 71

Multiple Choice

Botulinum toxin inhibits the presynaptic release of acetylcholine. If inhibition occurs at a neuromuscular junction, then


A) the synaptic cleft will close.
B) muscle contraction will cease.
C) the post-synaptic cell will die.
D) muscles will spasm.
E) receptor ion channels will remain open.

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