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Nightingale Physiology Practice Test

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The preganglionic neurons of the autonomic nervous system are classified as which type of neuron in terms of neurotransmitter?
Correct Answer:
Cholinergic
Explanation:
Autonomic preganglionic neurons are cholinergic because they release acetylcholine onto nicotinic receptors on the surface of the postganglionic neuron. This acetylcholine-mediated connection is fast and excitatory, forming the initial step of the autonomic cascade in both sympathetic and parasympathetic pathways. Adrenergic would describe neurons that release norepinephrine, which is characteristic of many postganglionic sympathetic fibers rather than the preganglionic ones. GABAergic and glutamatergic terms refer to neurotransmitters primarily used in the central nervous system rather than the typical autonomic preganglionic pathways.

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