why doesn't a women body reject the sperms since it is an external organism , instantly
i.e, it should have produced the antibodies against it right?
If women's bodies rejected sperm, we wouldn't be here. We're designed to reproduce and rejecting sperm wouldn't allow reproduction.
http://boards.straightdope.com/sdmb/showthread.php?t=651933
http://health.howstuffworks.com/pregnancy-and-parenting/pregnancy/conception/conception-process.htm
actually, women do react to foreign material. I have known of one severe case in my lifetime. About 12 percent of women develop allergic symptoms severe enough to warrant doctor visits. usually, the symptoms are not severe, as the material is not retain for a prolonged period.
see https://www.google.com/search?q=allergic+to+sperm&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-beta
Actually the woman's body does reject the sperm, that is one of the reasons why, of the millions of sperm in the ejaculate, only a few reach the ovum.
thank you
The female reproductive system is designed to anatomically and immunologically support the introduction of sperm cells. Here's why the female body doesn't instantly reject sperm:
1. Physical barriers: The female reproductive tract creates a protected environment for sperm. The cervix acts as a physical barrier, only allowing healthy sperm to pass through and protecting against pathogens. Additionally, the cervical mucus changes in consistency during ovulation, facilitating the movement of sperm while filtering out potentially harmful agents.
2. Immunological tolerance: The female body has mechanisms to prevent an immune response against sperm cells. The sperm actually carries molecules on its surface that help suppress the woman's immune system, preventing it from attacking the sperm as a foreign invader.
3. Immunological privilege: The testes, where sperm is produced, are protected by a physiological barrier called the blood-testis barrier. This barrier prevents the sperm and their cellular components from directly interacting with the bloodstream and the immune cells that could trigger an immune response.
4. Selective immune response: The female body's immune system recognizes pregnancy as a desirable condition. During fertilization, the sperm and egg come together to form a new, unique set of DNA, and this process triggers changes in the female body that facilitate embryo implantation and support pregnancy. Consequently, the immune system is regulated not to attack sperm or the resulting embryo.
It's important to note that the female immune system can still produce antibodies against sperm, but the processes described above help prevent an immediate and strong immunological response. However, in some cases, a woman's immune system may develop antibodies against sperm, leading to fertility issues, but this is relatively rare.