Dictionary » S » Semen



(Science: biology) ejaculate. The fluid released at orgasm which contains sperm and secretions from the prostate gland. The thick white fluid containing spermatozoa that is ejaculated by the male genital tract.The liquid like substance that is ejaculated from the penis containing the sperm gametes capable of fertilising with the female egg [[gamete.

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I have got some BIG issues! forgive the long post

... PATHWAY OF THE ABO SYSTEM The term secretor, as used in blood banking, refers to secretion of ABH antigens in fluids such as saliva, sweat, tears, semen, and serum. If people are secretors, they will secrete antigens according to their blood groups. For example, group O people will secrete H antigen, ...

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by saddy51
Sun Jan 04, 2015 10:39 am
Forum: Genetics
Topic: I have got some BIG issues! forgive the long post
Replies: 1
Views: 1908

reproductive sytem

... ejection system (for want of a better phrase) is inextricably linked with the urinary system - the urethra provides passage for both urine and semen. For the last bit I'd go with thinking about which sex hormones have a significant effect elsewhere - think about oestrogen and testosterone, ...

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by Babybel56
Fri Feb 28, 2014 8:49 am
Forum: Molecular Biology
Topic: reproductive sytem
Replies: 1
Views: 5649

Transmission of HIV by sexual contact

It also depends upon gender. Passage from men to women does not depend on direct blood access (virus in semen can get into lymph drainage once they are far enough into the system), but passage from women to men does require some sort of lesion for access. Men-to-men does not ...

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by Darby
Tue Jul 24, 2012 2:24 pm
Forum: General Discussion
Topic: Transmission of HIV by sexual contact
Replies: 4
Views: 4035

What colour do sem*n stains glow under a black light?

Do anybody know what colour does semen stains glow under a black light (uv light)? Blue or Yellow ? Would it affected by the wavelength of the black light? How about a 300-400nm(wavelength) black light? Thanks.

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by endallpains
Tue May 29, 2012 6:05 pm
Forum: Human Biology
Topic: What colour do sem*n stains glow under a black light?
Replies: 3
Views: 3167

Re: How long can they live outside the body?

While sperm can survive in the male reproductive tract several weeks, but in the semen of after ejaculation at most only live in 24 to 72 hours. But if the temperature drop, semen can be stored a few weeks; If use liquid nitrogen freezing, long-term sperm or even ...

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by lucy520
Wed Feb 29, 2012 8:28 am
Forum: Cell Biology
Topic: How long can they live outside the body?
Replies: 2
Views: 3320
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