[Mechanism of the regulation of microvascular vasoconstriction and vasodilation]

Basing on double reciprocal innervation and regulation with its cholinergic (parasympathetic part) and adrenergic components, mechanisms of vasoconstriction and vasodilation of microvessels are considered. The latter are presented as a multicontour system, including the central adrenergic contour, two terminal contours, in the form of terminal arcs of cholinergic and adrenergic type, two neurohormonal contours also of cholinergic and adrenergic type, passing through the hypothalamo-hypophyseal complex.