[Morphologic classification of vascular changes in the microcirculation].

Morphological vascular alterations in microhemocirculation are classified into those connected with the age (evolutional and involutional), functional, pathologic, regenerative and compensatory. Age and functional transformations of vascular terminals are related to the physiological processes. Manifestations of reparative regeneration and compensatory restructuring of the microcirculatory bed vessels are characterized. It is noted that compensatory transformations of vascular terminals are frequently combined with regenerative changes which, on the whole, represent the morphology of adaptive responses of microvessels.