Muscarinic receptor agonists respiratory effects

Muscarine, an alkaloid from certain species of mushrooms, is a muscarinic receptor agonist. The compound has toxicologic importance muscarine poisoning will produce all of the effects that are associated with an overdose of ACh (e.g., bronchocon strict ion, bradycardia, hypotension, excessive salivary and respiratory secretion, and sweating). Poisoning by muscarine is treated with atropine. 

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