Preganglionic Nicotinic Receptor — FRCA Primary MCQ

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EasyPharmacology - AutonomicPreganglionic Nicotinic ReceptorFRCA Primary

Parasympathetic preganglionic neurones release acetylcholine at which receptor type?

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Correct answer: B — Nicotinic

All preganglionic autonomic neurones (sympathetic and parasympathetic) release ACh at nicotinic receptors on postganglionic neurones. Parasympathetic postganglionic neurones then release ACh at muscarinic receptors on target organs. Sympathetic postganglionic neurones release noradrenaline at adrenergic receptors (exception: sweat glands use ACh).

Reference: Power Kam 2018 Principles of Physiology for the Anaesthetist