How does the fetus get out of the narrow “birth canal”? After reading these pictures, I feel that it’s not easy to be pregnant

I don’t know if pregnant mothers have considered such a question: how does the fetus pass through the small birth canal of a woman? After all, even if it’s elastic, it’s not easy for the fetus to get through. < / P > < p > in view of this, some people have previously proposed the “theory of reconstituted bones”, which means that when the fetus passes through the birth canal, all the bones of the body will automatically shift in order to cooperate with the body to pass through the narrow birth canal, so as to achieve the ideal delivery effect. < / P > < p > but in fact, it’s not so exaggerated. The “theory of reconstituted bones” is just an exaggeration of some people. However, in the process of crossing the birth canal, the babies really have to go through some hardships. < / P > < p > in the early preparation stage, when the fetus feels that it can almost start, it will tell the mother through contractions, “Mom, I’m coming.” < / P > < p > it takes a lot of effort for the early fetus to enter the basin first, because it is not easy to “enter the pit” more accurately, and it takes a long time for some fetuses to enter the basin alone. < / P > < p > after entering the basin, the next step is to open the uterine orifice. Most of the uterine orifice needs to be opened to about 10 fingers before the fetus can give birth smoothly, because the skull length and diameter of most fetuses are about 9.2 cm. If the uterine orifice can not be opened to 10 fingers, it is difficult for the pregnant woman to give birth to the fetus smoothly. < / P > < p > therefore, only when the cervix is almost opened to about 9-10 fingers, can the delivery process really start, although most of the pregnant women will be pushed into the delivery room when the cervix is opened to about 5 fingers, this is mainly because the speed of opening the cervix is faster and faster in the later period, and preoperative preparation is also needed before delivery, so most of them will push the pregnant women into the delivery room in advance. < / P > < p > the real process of cutting through thorns and thorns begins. During the process of opening the cervix, the pregnant mothers will constantly try to find out whether the cervix is suitable for them to go out. When the conditions are met, they will seize the right time to enter the birth canal, and after entering the birth canal, it is also the real beginning of the hardships of Taibao. < / P > < p > many people feel that in this process, only the pregnant women are working hard, but in fact, the little ones have also made a lot of efforts. In the birth canal, they should try their best to make their own rhythm match their mother’s breathing and exerting force, so that they can use the force to move forward. < / P > < p > in the first stage, the fetus will first curl up its body, tighten its jaw, and at the same time, shrink its shoulders as much as possible. In order to alleviate the pain of the mother, they try to make themselves smaller, so as to facilitate their smooth passage through the birth canal. < / P > < p > this is also the view that some people put forward the theory of “bone reorganization”. In fact, it’s not so exaggerated. It’s just that the body tissue of the fetus is softer, and the gap between the bones is larger, so the fetus can better make itself smaller by a similar way of “bone contraction”. < / P > < p > as long as they can make themselves move forward, they are willing to try, most of which are “rotation”, “reset”, “jaw retraction”, “shoulder retraction”, “supine extension” and so on. It can be seen that it is very hard to perform these movements for a long time in the birth canal. < / P > < p > when the fetus gets ready for this, it will start its second stage. At this time, the fetus also has a better grasp of the mother’s power and breathing rhythm, so they will try to make a sprint. < / P > < p > but this sprint process is not simple. For some parturients with long delivery time, the fetus may be stuck in the birth canal for several hours. Of course, the longer the time, the greater the risk. < / P > < p > when the fetus almost rushes to the exit of the birth canal, the third stage is a bumpy one, because the reproductive orifice of the puerpera is much smaller than the fetal head, so it is not easy to pass. If the fetus still can’t be delivered after many attempts, the doctor will take the way of lateral incision, so that the fetus can be delivered successfully. < / P > < p > of course, in the whole process of delivery, the most difficult thing is the puerpera, from the initial uterine contraction pain, to the pain in the process of delivery, and finally may have to side cut, which will make the puerpera suffer a lot. < / P > < p > many people compare this process to “going through hell” before giving birth to a child. In fact, it’s no exaggeration at all. Many mothers rely on their children’s beliefs to recover their lives from the delivery room. < / P > < p > all say that “being a mother is hard”, so weak and delicate women, but at the moment of being a mother, they are “Invincible and cutting through thorns” just to make the baby born healthy and safe. < / P > < p > finally, we also need to remind pregnant mothers that they must keep a good mood during the delivery process, and do not be too nervous, otherwise it will hinder the progress of labor. < / P > < p > because too much tension leads to the decline of the elasticity of the birth canal, in this way, the fetus will not be able to make better use of the force, and it may also stagnate, which can easily lead to the occurrence of danger over a long period of time. Therefore, for the sake of themselves and the fetus, we should try to let ourselves relax, at the same time, we can also speed up the delivery and reduce the torture. 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