acetylcholine

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  1. HereWeGo21

    Acetylcholine and heartrate

    So I got a Kaplan question saying that Ach administration INCREASES heart rate? I now get the mechanism they're going for. Ach --> peripheral vasodilation --> reflex tachycardia. But...like...what about the M2 muscarinic receptor on the heart?? Wouldn't Ach directly cause bradycardia by acting...