Read more … Discussion group. Intrauterine Within the uterine cavity. Using a catheter, semen prepared for this purpose is brought directly into the uterus.
A gentleman's relish is the true water of life. A nice shot of semen allows a man to pass on a genetic code through the ages, offering the closest thing to eternal life humans are ever likely to achieve. But such wonders aren't straightforward.
Two situations that result in the conversion of human mid-cycle cervical mucus from a sperm-receptive to a sperm-hostile form are described here: firstly, the addition of mucospissic agents, and secondly, the presence of antisperm antibodies. Two mucospissic biguanides were studied, chlorhexidine and Vantocil; both were totally spermicidal in the range mg ml Treatment of mucus with 1.
The ubiquitous occurrence of sperm selection mechanisms throughout nature, some depending upon the self-selective propensities of spermatozoa while others involve antagonistic selection imposed by the female reproductive system, has stimulated considerable theoretical interest and debate for many years. Evolutionary biologists have developed several hypotheses that link sperm selection to the inheritance of superior fitness traits i. In this review we examine the value of sperm function tests in the context of the biological issues involved to see how much guidance can be gleaned from the natural selection processes. Semen assessment methods are used extensively in investigations of human clinical infertility and the last decade has seen the introduction into andrology laboratories of computer-assisted methods for both sperm motility and morphology analyses.
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Scanty mucus can be the result of anti oestrogen e. The site of origin can be identified by cross-over testing with donar sperm and mucus respectively. Poor sperm-mucus penetration in the absence of sperm shaking movement in SCMC- T provide evidence of non immunological cervical hostality.
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School of Medicine. If cervical mucus is abnormal, it may prevent sperm from entering the uterus or may promote the destruction of sperm. See also Overview of Infertility.
Why one year? The good environment for sperm is possible when the pH of cervical mucus is 7. An overacidified environment makes sperm immotile so it dies in the vagina.