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Pre-ejaculate on the glans of the penis. Pre-ejaculate (also known as pre-ejaculatory fluid, pre-seminal fluid or Cowper's fluid, and colloquially as pre-cum) is a clear, colorless, viscous fluid that is emitted from the urethra of the penis during sexual arousal and in general during sexual activity.
A 1992 World Health Organization report described normal human semen as having a volume of 2 mL or greater, pH of 7.2 to 8.0, sperm concentration of 20×10 6 spermatozoa/mL or more, sperm count of 40×10 6 spermatozoa per ejaculate or more, and motility of 50% or more with forward progression (categories a and b) of 25% or more with rapid ...
Methods of semen collection from humans include: Masturbation, directing the sample into a clean cup. [6] This is the most common way to collect a semen sample. [6] Sexual intercourse using a special type of condom known as a collection condom. [6] Collection condoms are made from silicone or polyurethane, as latex is somewhat harmful to sperm ...
The man then rubs his penis focusing on the glans. He ejaculates for the second round into the woman's mouth and onto her face while she lies on her back. Note that semen from two ejaculations differs. Semen from the former ejaculation is thicker and more in volume than semen from the latter.
At the peak of arousal (0:57), orgasm occurs and semen is ejaculated from the penis in a series of rhythmic contractions. (In this demonstration, there are 15 strong contractions followed by 10 weaker contractions). Once arousal has peaked (1:35), the penis returns to its flaccid state, the scrotum loosens, and the testicles descend.
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Collecting the sperm at home gives a higher sperm concentration, sperm count and motility, particularly if the sperm is collected via sexual intercourse. [36] If the semen sample is to be collected by masturbation, a specimen from the early stages of the ejaculate should be into a clean, unused, sealed collection cup.