Reason for influencing foetus' brain development

Reason for influencing foetus' brain development
Here palace which the foetus inhabited a thermostatical environment, very dark but will be influenced by illumination outside the mother's body and become a little more on sometimes. Come from the sound of the blood circulation in enteric gurgling sound that wriggles to emerge, belly aorta in mother's abdominal cavity in this environment. The umbilicus drives blood flow sound of pulse, vibrations sound of mother's body or four limbs activity,etc., also there are sound of words from external world, music or noise,etc.. In a word, the foetus grows in the internal environment of the mother's body, accept various stimuli from mother's external environment frequently.
The problem that some domestic and foreign physicians care about at present together and study is: Whether there are relations while having influence, environment and heredity on the foetus in the environment.
1.Impact on foetus of pregnant woman's internal milieu
People a clear one very already, have, exert an influence because of the intersection of mother and internal milieu to foetus, if the weight is too high because it makes the foetus influenced that mother suffer from diabetes, the weight can be up to 7 kilograms at the time of the largest birth, such enormous foetus incident breathes the poverty-stricken disease. Having it because of the low mother's thyroid gland function, the foetus is influenced by its internal environment and produced the deformity of bone and tooth easily, the cryptorchidism, stretch one kind of dementias of tongue, the thyroid gland is swelling. Not complete, serious anaemia (especially big cellulous anaemia) of other heart and lungs function that if mother suffers froms , hypertension, at the time of the toxaemias of pregnancy, the foetus is apt to present the deformity or die from the palace.
2.Harmful effects to the foetus of ray in the other environment
The other environment has the following factors on the foetus' influence: Influence, influence of the job and hobby, influence of environmental pollution such as smoke and dust or noise of radioactive rays in other environment. After accepting the X-ray on one day of becoming pregnant, the embryonated egg may die and discharge. After until 20-50 day of becoming pregnant accept, 100-200 draw by X-ray, can cause serious deformity such as the foetus' nerve centre, eyes, bone, quantity is bigger and can cause embryo's death. So pregnant to should forbid the X-ray to shine the belly while being early. Other like supersonic wave, too should forbid, do, check by supersonic wave in pregnant a the first 3 months, cause foetus' deformity because of being pregnant and early and apt to be influenced by it. Pregnant accepts four or five months later supersonic wave is checked, what harmful effects will emerge to the foetus.
3.Pregnant woman's job and bad hobby impact on foetus
Job and bad hobby of the pregnant woman will cause certain influence on the foetus. If the pregnant woman is the anaesthetist or operating room nurse of the hospital, because technicality is often exposed to narcotic drug in pregnancy period, deformity of foetus that can cause in the belly or miscarrying; Smoke the pregnant woman of hobby stimulates because of the toxicity of the nicotine, make foetus' height weight bad in development. Because the nicotine makes the placenta blood vessel shrink, and the foetus gets oxygen and nutrient from mother's blood in the uterus through the placenta, in this way must lead to the fact to to support oxygen quantity to reduce foetus, carbon monoxide in the cigarette suck pregnant woman in the alveolus, enter people's alveolus wall capillary and enter in mother's blood, in this way the density of carbon monoxide of mother's blood is raised but the oxygen content of mother's blood is reduced. Then cause foetus' development the slow, weight is lightened, combine with the poison of other harmful compositions, can also cause foetus' deformity, miscarries, premature delivery or foetus' death. Verify according to the investigation, the pregnant woman of smoking, the neonatal weight ratio non-smoking pregnant woman's neonate is light 150-200 grams on average. And for example, the birth weight is lower than the neonates of 2500 grams, only accounts for 4.7% in the non-smoking lying-in woman gives birth to the baby, account for 7.7% - 12% in smoking the pregnant woman's neonate. Smoking apt to cause premature delivery and miscarry, 2-3 time high smoking, can cause foetus' deformity than non-smoker, it is mainly congenital heart disease, it is 2 times of the non-smoker's, and is often more serious heart malformations.
Therefore, the impact on foetus of smoking is very great, so for the foetus' normal growth and development, the pregnant woman should produce and prohibit smoking, the husband should avoid the pregnant woman too while smoking. Guarantee to forbid the poison that the pregnant woman is smoked no matter from the route of initiative or passive smoking. In this way, can have foetuses and is in a normal growth environment. Except smoking, the hobby of drinking will influence the foetus' development too. The pregnant woman drinks too many, can make the foetus happen " Foetus' alcoholism syndrome " . Someone investigated about 69 chronic alcoholic pregnant women in 1968, found the slow, spiritual movement obstacle of the development of child with the about equal proportion, and there is deformity of occuring frequently nature more.
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