PHARMACOLOGICAL EVIDENCE FOR THE EXISTENCE OF SYMPATHETIC GANGLIA IN THE VICINITY OF THE VAS DEFERENS OF GUINEA PIGS

Abstract
Pharmacological evidences were obtained for the existence of sympathetic ganglia in the vicinity of the vas deferens of guinea pigs. The ganglia are very likely to send off adrenergic fibers at least partly. Electrical stimulation of the hypogastric nerve induced contraction of the vas deferens. The contraction was depressed when the preparation including the plexus attached to it was immersed in hexa-methonium solution. Dimethylphenylpiperazinium (DMPP) produced constriction of the vas deferens only when the plexus was left attached to the organ. The response to DMPP was suppressed by hexa-methonium.