Retrograde Ejaculation and Infertility
Retrograde ejaculation is sometimes referred to as a "dry orgasm." Retrograde ejaculation is one cause of male infertility. Men often notice during masturbation that they do not have semen release but there is an orgasm. 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.
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