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By comparison of dopplerometry results of right uterine artery and umbilical cords of a fetus with the histologic and morpho-stereometric data studies of the placenta, and also placental bed and myometrium in an operational material at Cesarian sections, a morphological basis of disturbances of communications in a functional system "mother-placenta-fetus" in hypotonic and hypertonic dysfunction of the uterus is revealed. The morphological picture of chronic placental insufficiency of the fetoplacentary form in the presence of pathological chorion immaturity is revealed in the development of weakness of activity. The uteroplacentary form of chronic placentaly insufficiency, incomplete gestation reorganization MPA and reduction morphometric parameters of a vascular channel miometrium documented formed discoordination of uterine muscles at child birth.

With scanning and transmission electron microscopy characteristic changes in the endothelial lining of myometrial vessels of uterus affected with myoma were revealed. In the presence of longitudinally oriented folds and microgrowths on the luminal surface in a healthy myometrial part, a number of changes were observed in the myoma vessels. These included the disappearance of cell surface derivatives, disturbance of tight junction of endothelial cells borders, the rise of cells over the endothelial monolayer and formation of crateriform pits. The partition of the endothelial cells on myoma vessels was accompanied by the disturbance of the microvesicular transendothelial transport.

Structure of the blood bed has been studied in normal rat uterus and at ageing. Phenomena of involutive changes in the blood bed have been demonstrated. They depend on the process of sclerosis in the organ and desolation of vessels.

Histological, morphometric and histochemical examination of uterine samples was carried out in 33 cases of intramural myoma (aged 26-45) and 32 autopsied controls with unaltered uterus (20-45 years). Peripheral areas of myomas showed a polymeric-homonomous structure of the blood microcirculatory bed. However, it was characterized by higher specific volumes of all components as compared to controls. This, perhaps, may account for local circulatory hyperestrogenism which supports myoma progression. Pronounced changes in the structure of microvessels of the central areas were matched by a 2-4-fold decrease in their specific volumes. The degree of said alteration in other areas of the myometrium was found to be in direct correlation with the size of myoma.

Age peculiarities of common structure of the microcirculatory pathways, specific volumes and amount of microvessels, zonal parameters of pericapillary microcirculation of metabolites, glycosamine glycans and glycoproteins contents, phosphatase and ATPase activity, collagen and elastic fibers of the microcirculatory bed vessels have been studied in 190 unchanged uteri, beginning from 36-week-old fetuses up to 35 years of age. The microcirculatory bed of myometrium during the period of postnatal ontogenesis investigated possesses a polymer-homonomous structural organization; its base make myoangiomas, including the terminal arteriole with precapillaries and collecting venule, that run from it. Similar structure of the myometrium microcirculatory pathways is already observed in fetuses of late antenatal period. In endometrium formed glanduloangionomas are revealed in the prepubertal age. Increase in glycosamine glycans contents is stated in the microvessel walls and in the uterine stroma during the process of its development. Compensatory-adaptive changes in the uterine microcirculatory bed are described during the newborn period up to the puberty. Functionally mature structures of the microcirculatory pathways in the submucosal and vascular layers of myometrium, endometrium and in the cervix uteri are found to be formed earlier than in other areas of the organ.