在交感神經節(sympathetic ganglia)中,刺激其節前纖維(preganglionic fiber)時,在節後神經元(postganglionic neuron)上所記錄到最快的反應,通常為下列那一組神經傳導物質(neurotransmitter)及相關受體(receptor)所造成?
Acetylcholine, nicotinic receptor
Acetylcholine, muscarinic receptor
Norepinephrine, alpha receptor
Norepinephrine, beta receptor