[Circulatory bed of the small intestinal villi of newborn infants].

By a complex approach, the injection technique, the non-injective method of impregnation after V. V. Kuprianov and some histological methods including, it has been demonstrated that the terminal villous network is formed by vessels of a single type--capillaries. The capillaries constitute the subepithelial network, with the outflow realized along the postcapillary venules taking their origin from the upper third of the villus. The postcapillary venules, merging at the base of the villus, form the collecting venules which are drainage vessels for the mucosal cripts, as well. The venules flow into the submucosal venous collector. In the connective tissue stroma typical arterioles are absent.