[The characteristics of the hemodynamics and oxygen regimen of the rat uterus].

For biomicroscopic study of architectonic and hemodynamic features of uterine vascular bed wide ligation was carried out. It is shown that the vascular bed serves for blood deposition with cyclic change of inflow and outflow intensity. A rhythmic hypoxia results in a decrease of PO2 in the myometrium. The revealed biorhythm is considered evolutionary, determining physiological mechanism of plastic supply of generative function and development of the fetus resistance to hypoxia.