[Experimental studies of the location of neural centers in the bovine uterus].

Three cows of the black-and-white breed were used for the studies. In cow N.1 the ovary, oviduct and the uterus were excised. In cow N.2 the uterus cornua were excised. The control was cow N.3. The animals were slaughtered after 21 days from the operation and the following material was taken: medulla oblongata, the thoraco-lumbosacral segment of the spinal cord together with bilateral spinal ganglia and the sympathetic trunk ganglia, as well as nerve ganglia and plexi of the abdominal and pelvic cavities. The material was fixed in alcohol, embedded in paraffine and cut into 15 micron thick clises which were stained according to Nissel'a modified method. The analysis of the preparations ahowed that the central nervous system sends directly to the uterus a small number of nerve fibres from the following nuclei; of the vagus nerve (medulla oblongata), intermediolateralis, intermedio-medialis and of the cerebello-spinal tract (spinal cord). Most fibres innervating the uterus of the cow come from the ganglia and plexi of the peripheral vegetative system; mesenteric anterior, hypogastric, pelvic, visceral, mesenteric posterior and also form ganglia of the sympathetic trunk and spinal ganglia.