Abstract
In the context of the structures concerning the neurophysiology, the cardiovascular system of it may be important to revalue the role of the Toraco-Lumbo (T12-L2 = sympathetic efferent section)-Sacral (S2-S4 = vagal afferent section) centers with integrative nitrergic system, the vascular peptides, in the field of an active microcirculation vasomotor mechanism from puberty to aging. These are the only centres of the spinal cords to have a prominent neurovasodilatory action through the beta-stimulation and alpha-blockade starting with Ach action, but also through the vagal termination S2-S4 where neurotransmitting vasodilator reflex NO-cgmp- dependent is produced. Nitric-oxyde participates also in regularizing the control on peripheral tone in man. The synthesis of NO occurs in cardiac-sympathetic and vagal ganglia. The same can be verified during puberty in the Toraco-Lumbo-Sacral ganglia, therefore the vasal vascular tone becomes dynamic. Different factors published produce a bettering of microcirculation vasomotility. Therefore one should consider the structural parallelism explaining the relationship between the Toraco-Lumbo and Sacral selective system, the sexual circuit with the NO-vasodilator system prevailing in the young-adult period, while in older ages the vasoconstrictor endothelins-1 system prevails.
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