Sources of the autonomic and afferent fibers in the horns and body of the uterus in dogs

The study was conducted on sexually mature female dogs. The extirpation of the different parts (both homs and body) of the uterus was performed. After 21 days, the following material for examination was collected: the brain stem, the thoraco-lumbo-sacral part of the spinal cord with its all spinal ganglia, sympathetic chain and also the ganglia and nerve plexuses of the abdominal and pelvic cavities. The experiments produced retrograde changes in nerve cells of the central and peripheral nervous system in the experimental animals. The comparison of the localization of retrograde changes in the neurons of the experimental animals and those of the control animal provided the basis for tracing the localization of the nerve cells which are the source of the nerve fibres supplying the horns and body of the uterus. The observations performed establish that these fibres are of multisource origin.