Editing Retrograde ejaculation (section)

==Signs and symptoms==
Retrograde ejaculation is sometimes referred to as a "[[dry orgasm]]." A man may notice that no [[semen]] is produced during masturbation despite the occurrence of orgasm.<ref>[https://www.nlm.nih.gov/medlineplus/ency/article/001282.htm Explanation on Retrograde ejaculation] MedlinePlus. Retrieved on 2010-03-02</ref> Another underlying cause for this phenomenon may be [[ejaculatory duct obstruction]].

During a male orgasm, [[sperm]] are released from the [[epididymis|epididymides]] and travel via small tubes called the [[vas deferens|vasa deferentia]]. 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 [[Neck of urinary bladder|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 been damaged.<ref name="merck">[http://www.merck.com/mmhe/sec21/ch240/ch240f.html The condition known as retrograde ejaculation] Merck, Sharpe & Dohme. Retrieved on 2010-03-02</ref>