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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Retrograde ejaculation ： ウィキペディア英語版 Retrograde ejaculation occurs when semen, which would normally be ejaculated via the urethra, is redirected to the urinary bladder. Normally, the sphincter of the bladder contracts before ejaculation forcing the semen to exit via the urethra, the path of least resistance. When the bladder sphincter does not function properly, retrograde ejaculation may occur.==Signs and symptoms ==Retrograde ejaculation is sometimes referred to as a "dry orgasm." Retrograde ejaculation is one cause of male infertility.(Retrograde ejaculation treatments ) Infertility factors portal. Retrieved on 2010-03-02 Men often notice during masturbation that they do not have semen release but there is an orgasm.(Explanation on Retrograde ejaculation ) MedlinePlus. Retrieved on 2010-03-02 Another underlying cause for this phenomenon may be ejaculatory duct obstruction.During a male orgasm, sperm are released from the epididymis and travel via small tubes called the vas deferens. The sperm mix with seminal fluid in the seminal vesicles, prostate fluid from the prostate gland, and lubricants from the bulbourethral gland. During climax, muscles at the end of the bladder neck tighten to prevent retrograde flow of semen. In retrograde ejaculation, these bladder neck muscles are either very weak or the nerves controlling the muscles have become damaged.(The condition known as retrograde ejaculation ) Merck, Sharpe & Dohme. Retrieved on 2010-03-02 Retrograde ejaculation occurs when semen, which would normally be ejaculated via the urethra, is redirected to the urinary bladder. Normally, the sphincter of the bladder contracts before ejaculation forcing the semen to exit via the urethra, the path of least resistance. When the bladder sphincter does not function properly, retrograde ejaculation may occur. ==Signs and symptoms == Retrograde ejaculation is sometimes referred to as a "dry orgasm." Retrograde ejaculation is one cause of male infertility.〔(Retrograde ejaculation treatments ) Infertility factors portal. Retrieved on 2010-03-02〕 Men often notice during masturbation that they do not have semen release but there is an orgasm.〔(Explanation on Retrograde ejaculation ) MedlinePlus. Retrieved on 2010-03-02〕 Another underlying cause for this phenomenon may be ejaculatory duct obstruction. During a male orgasm, sperm are released from the epididymis and travel via small tubes called the vas deferens. The sperm mix with seminal fluid in the seminal vesicles, prostate fluid from the prostate gland, and lubricants from the bulbourethral gland. During climax, muscles at the end of the bladder neck tighten to prevent retrograde flow of semen. In retrograde ejaculation, these bladder neck muscles are either very weak or the nerves controlling the muscles have become damaged.〔(The condition known as retrograde ejaculation ) Merck, Sharpe & Dohme. Retrieved on 2010-03-02〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Retrograde ejaculation occurs when semen, which would normally be ejaculated via the urethra, is redirected to the urinary bladder. Normally, the sphincter of the bladder contracts before ejaculation forcing the semen to exit via the urethra, the path of least resistance. When the bladder sphincter does not function properly, retrograde ejaculation may occur.==Signs and symptoms ==Retrograde ejaculation is sometimes referred to as a "dry orgasm." Retrograde ejaculation is one cause of male infertility.(Retrograde ejaculation treatments ) Infertility factors portal. Retrieved on 2010-03-02 Men often notice during masturbation that they do not have semen release but there is an orgasm.(Explanation on Retrograde ejaculation ) MedlinePlus. Retrieved on 2010-03-02 Another underlying cause for this phenomenon may be ejaculatory duct obstruction.During a male orgasm, sperm are released from the epididymis and travel via small tubes called the vas deferens. The sperm mix with seminal fluid in the seminal vesicles, prostate fluid from the prostate gland, and lubricants from the bulbourethral gland. During climax, muscles at the end of the bladder neck tighten to prevent retrograde flow of semen. In retrograde ejaculation, these bladder neck muscles are either very weak or the nerves controlling the muscles have become damaged.(The condition known as retrograde ejaculation ) Merck, Sharpe & Dohme. Retrieved on 2010-03-02」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.