Regarding the sympathetic nervous system, the neurotransmitter ACh is
A) always excitatory when used in the synapses of the sympathetic nervous system.
B) broken down by COMT.
C) going to reduce the activity of the other neurotransmitter norepinephrine.
D) broken down by monoamine oxidase.
E) a chemical similar to the structure of adrenaline.
A
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