Not only viruses are able to disrupt the normal course of pregnancy and lead to developmental disorders or even deformities in the fetus. Besides them, embryos and fetopathies can also cause bacteria belonging to different groups.
Another infection, dangerous in terms of intrauterine infection of the fetus, is syphilis. Like tuberculosis, syphilis was at one time considered a social disease associated with an inadequate cultural level of the population.
Studies conducted by various specialists - obstetrician-gynecologists, teratologists, embryopharmacologists, physiologists and many others, suggest that chemicals can actually affect the fetus, causing the development of embryopathies.
First, during pregnancy there is a change in the quantity and quality of hormones. And you already know about one of them. This is a chorionic gonadotropin. It is produced by one of the membranes of the fetal egg after implantation (fixation) of it in the uterus.
Not all infectious diseases are equally dangerous for the developing fetus. For example, influenza or other types of acute respiratory diseases quite often affect pregnant women, but they very rarely cause fetal development disorders. But rubella, which is rare enough, causes these disorders in almost 70% of cases.
Twins are two or more children, developing together in the same womb and being born almost simultaneously. Twins are identical and multi-faceted (dvuyaytsevymi).
Induced births are a method of artificial delivery of labor. The fact is that sometimes it is necessary that labor starts, but they do not start on their own.
After the baby was born and from the mouth and nose he sucked the mucus, he begins to breathe on his own. Usually this happens in 10-20 seconds, because in order for the first breath to occur, certain changes in the cardiovascular and respiratory systems must take place in the child's body.
Together with the first inhalation, a restructuring in the child's body begins - the air begins to pass through the lungs. As a consequence, the work includes a small circle of blood circulation, which in utero did not function.
Normally, the child has good hearing. Being in the womb, he could distinguish the voices of his mother and other family members. Therefore, after birth, the child immediately recognizes the voice of his mother and calms down, hearing her affectionate words.