[Neurotransmission and the lower urinary tract].

The neurotransmitter activity in the lower urinary tract is very complex. This paper reviews the main substances, known today, their agonists, antagonists, metabolic pathways and their action and discusses the site of action of neuropharmacological substances. The existence of a non-adrenergic, non-cholinergic pathway, in parallel with the sympathetic adrenergic and the parasympathetic cholinergic pathways is thus clearly admitted.