| Project/Area Number |
04807001
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
General anatomy (including Histology/Embryology)
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| Research Institution | TOKYO MEDICAL AND DENTAL UNIVERSITY |
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Principal Investigator |
SATO Kenji Faculty of Medicine, School of Allied Health Sciences, Professor, 医学部, 教授 (20107246)
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| Co-Investigator(Kenkyū-buntansha) |
KAZUNORI Kihara Faculty of Medicine, Urology, Lecturer, 医学部, 講師 (40161541)
佐々木 宏 東京医科歯科大学, 医学部, 助教授 (10014177)
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| Project Period (FY) |
1992 – 1993
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| Project Status |
Completed (Fiscal Year 1993)
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| Budget Amount *help |
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1993: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1992: ¥1,400,000 (Direct Cost: ¥1,400,000)
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| Keywords | MORPHRLOGY / NEUROPHYSIOLOGY / SEMINAL TRACT / AUTONOMIC NERVE / SEMINAL EMISSION / BLADDER NECK CLOSURE / LUMBAR SPLANCHNIC NERVE |
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| Research Abstract |
1) Retrograde ejaculation after bilateral hypogastric nerve transections in the dog is attributable to the absence of effective compensatory sympathetic pathway for bladder neck closure under the recovery of seminal emission by compensatory pathways through spermatic nerves and pelvic nerve.
2) Seminal emission and bladder neck closure during ejaculation are generated by 3-5 lumbar splanchnic nerves regardless of their branching levels from lumbar sympathetic ganglia, but not by either intermesenteric splanchnic nerves.
3) 3-5 lumbar splanchnic nerves generate bilateral seminal emissions from ejaculatory ducts by sending signals to bilateral epididymal tails and that some of the signals through each lumbar splanchnic nerve cross to the other side at the inferior mesenteric plexus and/or the prostatic plexus.
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