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25.11.2006 23:06:39
As the female bodies intended by the nature for continuation of a sort function
In an organism of the woman as soon as it reaches a sexual maturity, ripen яйцеклетки. At each healthy woman for a life ripens from 400 to 500 яйцеклеток, ready to fertilisation. The time interval from the first day менструации till last day before following менструацией is called as a cycle or менструальным a cycle. A sign of that for each cycle one ripens яйцеклетка, — a monthly bleeding, or менструация. |
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25.11.2006 23:21:37
As the man's bodies intended by the nature for continuation of a sort function
For sexual intercourse and conception carrying out man's genitals as are important, as well as female. Therefore it is necessary to know, how they are arranged also what processes in them occur. Just as in female яичниках ripen яйцеклетки, in man's sexual glands, яичках, the man's cages named сперматозоидами collect. Besides, in them the man's sexual hormone which and performance of its sexual function by it is so necessary for an organism of the man , as well as a female sexual hormone for a monthly cycle is developed .
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25.11.2006 23:29:24
The moment when the new life arises
After овуляции яйцеклетка lives during 6 — 12 ч. At this particular time there can be its fertilisation. If after 12 ч яйцеклетка not оплодотворена, it perishes. Man's сперматозоиды reach a place of possible fertilisation approximately in an hour. They make a considerable way: from a vagina through a uterus neck in a cavity of a uterus and then in яйцеводы. |
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25.11.2006 23:35:06
Whether there will be it twins?
On each 85 sorts one twins, on 7200 sorts — one тройня, on each 614 000 sorts — one четверня drop out . The birth of five twins all over the world was observed by the little more than hundred times, only in rare instances children from a hand lived to adult age. Last years cases of a birth of six twins by which optimum conditions for "ripening" were created were observed, but only some of them could survive. |
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25.11.2006 23:36:17
The period after fertilisation
So, usually only unique сперматозоид interferes in female яйцеклетку, thus there is a fertilisation and conception of one new life. At first in female яйцеклетку the head сперматозоида gets, then by means of a threadlike tail it goes forward to its kernel. As soon as the kernel яйцеклетки appears close enough from a kernel сперматозоида, the tail, обеспечивавший progress, disappears from a head сперматозоида as superfluous. |
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25.11.2006 23:43:16
The important question: the boy or the girl?
Crucial importance at origin of the child of a certain floor has merge of female and man's genes. Set of threadlike formations of the cellular kernel named chromosomes, defines the basic hereditary properties of cages and organisms. Female яйцеклетка and man's сперматозоид contain on 23 such chromosomes (a chromosomal spiral, or a chromosomal chain) at which merge the healthy human body develops. The Y-chromosome causes a birth of the boy.
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25.11.2006 23:45:07
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