2. Neurotransmitters and Neuroreceptors o Acetylcholine and Norepinephrine ●△ I preganglionic neurons are cholinergic o Parasympathetic post ganglionic neurons are cholinergic o Sympathetic post ganglionic neurons are adrenergIc except o Sympathetics innervating sweat glands, blood vessels in skeletal muscle, and piloerection muscles are cholinergic2. Neurotransmitters and Neuroreceptors ⚫ Acetylcholine and Norepinephrine ⚫ All preganglionic neurons are cholinergic ⚫ Parasympathetic post ganglionic neurons are cholinergic ⚫ Sympathetic post ganglionic neurons are adrenergic except ⚫ Sympathetics innervating sweat glands, blood vessels in skeletal muscle, and piloerection muscles are cholinergic