射精の研究 : 第3報 : 精液のEmissionと射精時における内尿道口の閉鎖の神経支配について : I

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The nervous pathways controlling the two phenomena, seminal emission and closure of the internal urethral orifice were studied experimentally, using male mongrel dogs. Methods: The nerves examined in this study were the nerve fibers entering the lower mesenteric plexus, the splanchnic nerves and the lumbar nerves. The peripheral cut end of these nerves was electrically stimulated continuously with pulses of 0.5-5V in amplitude, 0.5-2 msec in duration and 1-40 cps in frequency. For seminal emission and ejaculation, posterior urethrogram was recorded by the method described in a previous report.^<1)> For measurement of contraction of the internal urethral orifice, a latex balloon fitted at the tip of a No.6 polyethylene tube was inserted into the internal urethral orifice and alteration of the pressure in the balloon was recorded. The results obtained were as follows: 1)Selective Stimulation on the Nerve Fivers enterining the lower Mesenteric Plexus.
社団法人日本泌尿器科学会の論文