Cholinergic mechanisms in the nucleus tractus solitarii and cardiovascular regulation in the rat.


To determine the role played by cholinergic neurons in cardiovascular regulation by the nucleus tractus solitarii (NTS), microinjections (0.1 microliter) of acetylcholine (ACh) or carbachol (C) were made into the NTS of rats, and the changes in arterial pressure and heart rate were recorded. The dose-dependent hypotension and bradycardia which resulted were… (More)


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