Is the vidian nerve cholinergic?
Electrical stimulation of the parasympathetic nerve (vidian) to nasal mucosa induces a nasal secretion and a nasal vasodilation.  We have provided additional evidence that, in the dog and cat, the secretory mechanism can be blocked with low doses of atropine sulfate (0.01 mg/kg), but the dilation mechanism is not blocked by high doses (1 mg/kg) of atropine sulfate.  By some definitions therefore, the vasodilation is not a cholinergic effect.  There appears to be a basic difference in the composition of the vidian nerve in the dog and cat.  In the cat, the vidian appears to have a strong sympathetic component.  In the dog it does not.  The human vidian nerve, according to anatomists, is more like the dog's.
D000109:Acetylcholine / Q000494:pharmacology; D000818:Animals; D001285:Atropine / Q000494:pharmacology; D001794:Blood Pressure / Q000187:drug effects; D002415:Cats; D004056:Differential Threshold; D004285:Dogs; D004558:Electric Stimulation; D004837:Epinephrine / Q000494:pharmacology; D009297:Nasal Mucosa / Q000187:drug effects / Q000294:innervation* / Q000378:metabolism; D010275:Parasympathetic Nervous System / Q000187:drug effects*; D010276:Parasympatholytics / Q000494:pharmacology; D010643:Phenoxybenzamine / Q000494:pharmacology; D010830:Physostigmine / Q000494:pharmacology
D010276:Parasympatholytics; D010643:Phenoxybenzamine; D001285:Atropine; D010830:Physostigmine; D000109:Acetylcholine; D004837:Epinephrine