Morphological characteristic of vesico-uterine part of a domestic dog's pelvic plexus

Despite a great number of newly developed treatment techniques for various diseases, there is an obvious lack of effective surgical approaches to the innervation sources of the internal genital organs in domestic dogs for pathogenetic impact and local anesthesia. The study has been performed on the bodies of mature mesomorphic domestic dogs that died or were euthanized as a result of noninfectious diseases. A set of morphological study methods has been used, including common and fine dissection after Academician V.P. Vorobyev, classical methods for preparation of light-optical tissue specimens, and morphometry. The conducted studies brought understanding of skeleto-, organo- and angiotopic interrelations between the lumbar parts of the right and left gangliated cords, the right and left lumbar splanchnic nerves, the ovarian arterial and venous plexuses, the caudal mesenteric ganglion and the homonymous plexus. A detailed characterization of macro- and microanatomical and histological structure of ovarian and uterinea extraorganic nerves has been provided. The study elucidated histostructural interrelations between innervation sources, ovarian, uterine and vaginal paraorganic nerves and surrounding connective tissue structures in domestic dogs. Lumbars of right and left gangliated cords, right and left lumbar splanchnic nerves, ovarian artery plexus, caudal mesenteric ganglion, cognominal plexus with coming out right and left hypogastric nerves and hysterocystic part of pelvic plexus, are identified as the sources of innervation for inner genital organs in she-dogs. The medical solution can spread ventrally, saturating the loose areolar connective tissue of the hysterocystic part of the pelvic plexus as well as the dorsal part of homonymous plexus with the hypogastric nerves.