Morphofunctional reasoning of perineal access for paracervical block for treating the hyperplasia of uterine mucosa in cats and dogs

As a result of morphological studies the sources of dog vagina innervations are inferior mesenteric ganglion, pelvic plexus and pudendal nerve. Histostructurally circum-internal nerves of corpus and cervix of uterus and vagina in dog and cat involve funicles of myelinated fibres, great amount of multipolar nerve cell tended to modular aggregation. All these formations are enclosed in a capsule formed by collagen fibers of connective tissue fiber. Anatomy-topographic specificity of these nerves is their localization on splanchnopleure medial surface of pelvic fascia. Morphological analysis of extra-peritoneal part of pelvic plexus clearly shows that when using intermediate access for paracervical blockade of vaginal nerve, corpus and cervix of uterus and vagina, local anesthetic solution should be administer in from the side of splanchnopleure medial surface of pelvic fascia to the zone of direct localization of corpus and cervix of uterus and vagina nerves.