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Are most postganglionic <span title="sympathetic...Acetylcholine">sympathetic...Acetylcholi...</span> or Norepinephrine?

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Are most postganglionic sympathetic...Acetylcholi... or Norepinephrine?

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  1. At synapses within the sympathetic ganglia, preganglionic sympathetic neurons release acetylcholine, a chemical messenger that binds and activates nicotinic acetylcholine receptors on postganglionic neurons. In response to this stimulus, postganglionic neurons principally release noradrenaline (norepinephrine).http://www.answers.com/topic/sympathetic...

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