Sympathetic effects tend to last ________ than parasympathetic effects. One reason is that ________.
A. longer; norepinephrine can diffuse into the bloodstream without being broken down
B. longer; acetylcholine is broken down by monoamine oxidase (MAO)
C. about the same; the two divisions use the same neurotransmitters
D. shorter; acetylcholine is broken down by acetylcholinesterase (AChE)
E. shorter; acetylcholine can diffuse into the bloodstream without being broken down
Answer: A
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