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In the Parasympathetic System,the Terminal Buttons of Preganglionic Fibers Secrete

Question 39

Multiple Choice

In the parasympathetic system,the terminal buttons of preganglionic fibers secrete ________,whereas the postganglionic fibers secrete ________.


A) norepinephrine; acetylcholine
B) glutamate; acetylcholine
C) serotonin; norepinephrine
D) acetylcholine; acetylcholine
E) acetylcholine; norepinephrine

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