[The circulatory bed of the human uterine tube]

By means of combined morphological methods blood vessels have been studied in 54 uterine tubes of child-birth women. The main pathways for carrying and distribution of blood to corresponding parts of the tube are sector arteries. They are situated in the subserous tela along the anterior and posterior semicircles of the organ. The microcirculatory bed (MCB) of the uterine tube is presented by serous, subserous, muscular and mucosal plexuses. The MCB of the serous tunic is characterized by vascular compositions--modules. Angioarchitectonics of the mucosal tunic is determined with differences in vascularization of complex and simple folds. Organospecific for small arteries and veins of the tubes is presence of vascular mechanisms, regulating the blood stream (intimal cushions, muscular-elastic constrictors, valves and others). Blood capillaries of the mucosal tunic possess a number of ultrastructural peculiarities: thickened peripheral part of endotheliocyte cytoplasm, that contains fenestrae; wide continuous basal membrane with pericytes in its duplication; three types of pericytic-endothelial contacts etc.