The Neurotransmitter Common to Both Preganglionic Nerve Fibers in the Sympathetic

question 16

Multiple Choice

The neurotransmitter common to both preganglionic nerve fibers in the sympathetic and parasympathetic nervous system is:

• A) norepinephrine.
• B) acetylcholine.
• C) epinephrine.
• D) serotonin.

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