Normally, semen exits the penis when a man ejaculates. Retrograde ejaculation causes some semen to travel backward into the bladder. Normal ejaculation forces semen—sometimes called ejaculate—through ...

Our andrology laboratory offers several diagnostic tests that can help your treatment process, including semen analysis, sperm penetration assay, and an anti-sperm antibody test. The acrosome cap is a ...

Are ejaculation problems an issue of mind over matter? Well, if men and their partner don't mind how long it takes them to ejaculate, then it really doesn't matter. For example, Ian Kerner, PhD, a sex ...

In males, urine and ejaculate both pass through the urethra. There’s a muscle, or sphincter, near the neck of the bladder that helps to hold urine in until you’re ready to urinate. During orgasm, that ...