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BuzzFeed Science had the opportunity to chat about semen with Dr. It turns out semen is pretty freaking baller, and we have the facts to prove it. Spermatazoa, or sperm, is the name given to the reproductive cell that looks like a tadpole.

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Lots of guys worry about whether the volume of their ejaculate is cause for concern, says Daniel Williams, M. According to parameters developed by the World Health Organization. Williams says.

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Both the coagulation and liquefaction of semen are the result of chemical reactions between the different components of the fluid, for which the seminal vesicles and prostate are chiefly responsible in respective order. The density and viscosity of semen when liquefied may be compared to that of refrigerated milk of varying fat content or room temperature half-and-half. The pH of semen is commonly measured between 7. Semen also has a high buffering capacity; it is capable of rendering the environment of the vagina which is normally slightly acidic neutral shortly after ejaculation.

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Back to Sexual health. Puberty can be a confusing time, because your body and your feelings are changing as you grow up. Here are answers to some of the questions that boys often ask about their bodies.

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Ejaculationthe release of sperm cells and seminal plasma from the male reproductive system. Ejaculation takes place in two phases: in the first, or emission, stage, sperm are moved from the testes and the epididymis where the sperm are stored to the beginning of the urethraa hollow tube running through the penis that transports either sperm or urine; in the second stage, ejaculation proper, the semen is moved through the urethra and expelled from the body. Sperm cells that are stored in the male body are not capable of self-movement because of the acidity of the accompanying fluids.

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This study was designed to establish whether motile spermatozoa are released with pre-ejaculatory fluid and whether this fluid therefore poses a risk for unintended pregnancy. Forty samples of pre-ejaculatory fluid were examined from 27 volunteer men. Samples were obtained by masturbation and by touching the end of the penis with a Petri dish prior to ejaculation.

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Ejaculation is the discharge of semen normally containing sperm from the male reproductory tractusually accompanied by orgasm. It is the final stage and natural objective of male sexual stimulationand an essential component of natural conception. In rare cases, ejaculation occurs because of prostatic disease. Ejaculation may also occur spontaneously during sleep a nocturnal emission or "wet dream".

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Sometimes the things you'd never bring up in polite company are the most interesting. Case in point: semen. It's one of those sex -related subjects that's shrouded in so much mystery, it becomes even more intriguing.

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If you're seeing this message, it means we're having trouble loading external resources on our website. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Science Health and medicine Human anatomy and physiology Reproductive system introduction. Welcome to the reproductive system.

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