The real duration of pregnancy is 266 days-38 weeks - 9. 5 mid-school months. The obstetric period of pregnancy is calculated from the first day of the last menstruation. Of course, no pregnancy at this time is not yet, however, such a calculus has its own historical justification. In quite distant times about ovulation (the time of exit of the egg from the ovary) has not yet been known, but they knew that when menstruation comes, a woman is not pregnant. Calculated that from this day to childbirth (if the expected menstruation does not come), it takes 280 days - 40 weeks-10 obstetric months (more on delivery times, see further), so such a calculation of the date of delivery and, accordingly, the period of pregnancy has rooted In human, and then in obstetric practice.
Normally in the body of a woman of childbearing age, if it is not pregnant, ovulation occurs monthly. One of the follicles matures and bursts, releasing the egg cell in it for subsequent fertilization. How many times the period of ovulation lasts how to determine it and find the perfect moment for conception, tell me in this article.
The process of full exit of the egg from the follicle and is ovulation. The rupture of the follicle occurs instantly, the process of exiting the eggs from it takes no more than an hour. Following this, the egg fell into the Fallopiev pipe, moves along it to the uterus and expects fertilization.
from the seventh day and until the middle of the cycle occurs the ovulatory phase. The follicle occurs the ripening of the egg. The middle of the cycle (conditionally on the 14th day at the 28th day cycle) follicle bursts, ovulation occurs. Then the egg cell on the phallopyipest tube moves to the uterus, where it remains active for another 1-2 day. It is important to understand that the duration of the menstrual cycle for each woman is different, but the duration of the ovulatory period is almost the same (12-48 hours). How many hours of ovulation lasts - purely individually. Most doctors believe that the eggs retains the ability to fertilize during the day.
If the egg was successfully fertilized, after three or four days it should get into the uterine cavity, and another one or two days - to attach to its wall. After implantation, the period of active development begins and the pregnancy comes into account. If there was no conception in this menstrual cycle, about a day after the exit of the follicle, the egg dealers dies, which, in turn, causes a new cycle and menstruation within two to two and a half weeks.
Scientists in the United States found that the pregnancy of a woman can last almost ten months from the moment of conception, and this is the norm, and not nine, as usual is considered. They also determined from which factors the duration of pregnancy depends.
After conducting a study among about 100 pregnant women, scientists were surprised, because on average, 268 days passed from conception before birth (more than 38 weeks). And after the cases of early childbirth were excluded, the difference in the duration of pregnancy was 40 days.
The authors of the scientific experiment allocated factors that affect the duration of the baby tooling, as well as during pregnancy. Among them are the age of feminine. The older than the young mother, the more time its pregnancy lasts. Another factor is the weight of a woman. Large moms were much longer waiting for their offspring. And for every 100 grams of excess weight, there was one day of pregnancy. Also, if a woman has a previous pregnancy was protracted, the next willing to be long.
Certainly, the authors of the study do not argue about the one hundred percent accuracy of their conclusions, since additional research requires additional research in the field of enhancing the fetus. However, if they are confirmed - the fact that a normal pregnancy actually lasts more than nine months, the provisions on pregnancy intervention must be revised.
Statistics argue that only 4 percent of women give birth to children 250 days after the last menstruation, while 70 percent of young mothers - for 10 days after the established date of delivery. These figures correspond to both ultrasound studies regarding the definition of the date of birth.
The duration of pregnancy every woman is individual and the child will decide when he needs to be born. Already at the first handling of a woman in a female consultation, the doctor can establish an approximate date of birth, then it is adjusted depending on the results of ultrasound surveys.
Doctor's calculations may not coincide with the date that pregnant calculated. As a rule, they differ for two weeks. It confuses future mothers, and they hurry to understand the method of establishing an approximate date of birth.
The main obstacle to accurate definition of the term is the impossibility of establishing the date of conception. The highest likelihood of the fertilization of the egg during ovulation. At this time, the ripe genital cell comes out of the follicle of one of the ovaries, after which the spermatozoa is fertilized.
The exact date of ovulation is determined using special tests or ultrasound surveys. Most women do not resort to them, even if the day of ovulation becomes known, the moment of fertilization cannot be fixed. Men's sperm retains livelihoods for several days, moreover, a fertilized egg is moving along phallopy tubes and then implanted into the wall of the uterus at different speeds.
Obsushet believe that on average, pregnancy should last 280 days, or 9 calendar months (10 obstetric months). This is a conditional indicator that is adopted for the convenience of calculation. To establish a birthday, the report starts from the first day of the beginning of the last menstruation, which usually comes two weeks before ovulation. Thus, from conception and until the day of childbirth, it takes 266 days. This does not mean that the child will be born exactly at the specified date, the docking is considered a pregnancy, which was resolved between 37 and 42 weeks.
The first day of the latter before the delay of menstruation is a kind of reference point, since the fertilization can occur after 13 or 14 days after it. Often this explains some inconsistent in the deadlines of the period in pregnant women and doctors.
In the event that the family of rejunction or premature gods was observed in the family of pregnant among close relatives, then there is a possibility that this woman has a situation with childbirth in a similar way. In addition, some pregnant women are so psychologically concentrated on a certain that the contractions begin on this day.
The right to life from the moment of conception is one of the rights of the embryo. It is determined by the ideas that the human embryo has all human rights, and the human life is holy and inviolable since the conception. As synonyms and .
"Plati how much you want" is a pricing strategy that buyers pay the amount of money for a certain product, sometimes even zero. In some cases, the minimum price can be installed, and / or the estimated price .
"And the day lasts the day" - the first Roman Chingiza Aitmatova. Published in 1980 in the magazine "New World". Later was published under the name "Brons of Films". In 1990, in the magazine "Banner" came out "Tale to the novel" "White cloud of Genghis Khan", VP .
Pregnancy - a period of time during which the fetus is developed and tooling. The duration of normally developing pregnancy is 40 weeks old, or 280 days, ranging from the first day of the last menstruation. This is a normal physiological state, but it is accompanied by a significant change in the usual hormonal background and the strengthening of almost all exchange processes in the woman's body, which can cause a number of painful deviations usually passing after delivery. Nevertheless, there are a number of states that are a serious threat to health and mother, and a developing child. The preceding state of health and the lifestyle of a woman may also affect pregnancy. Even for normal pregnancy, strict medical control is needed.
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