Once in the womb , the fertilized egg begins to divide. Part of the cells becomes a germ, and the rest builds an empty room - the uterus. At first, the building cells melt the mucous membrane of the posterior wall of the uterus, forming a cavity. In this "time" and embryo settles. To supply it with the necessary substances, a "garden" of villi is also grown there, into which the embryo vessels grow. This establishes an exchange between his blood and the mother. This placenta is called a chorion. He will become a full body only by the end of the first trimester.
From the diary of the placenta
At the 14-16th week, the chorion will take the form of a disk (because of which the ancient Greeks called the placenta - the special organ during pregnancy - a "cake"). The central large villus will develop into the umbilical cord and will soon reach a half-meter in length. Let's give the floor to the children's place - the placenta.
Hooray! The embryo became a fruit, and I'm more and more like myself! So many duties - the head is all around ... First, you need to develop female hormones, and in huge quantities, so that the baby is not born, ahead of time. Mom, listen carefully to your feelings during this period. If you suddenly feel the slightest pain in the lower abdomen or there will be bloody discharge - run to the doctor! I'm just learning to produce estrogen and progesterone. Secondly, I master the profession of a customs officer. I do not miss harmful substances, as well as mother's immune cells, so that the fetal rejection does not happen. But, as I try not to detain nicotine, alcohol, drugs and toxic smells, I will never learn. After 120 million years ago, when nature invented me, these "joys" were not yet. But the oxygen, nutrients and antibodies of my mother to protect the baby from disease will miss with pleasure! Thirdly, I perform the functions of the wastewater: I remove the waste products of life.
22-30 weeks
I'm already a real placenta. Rapidly growing and fully accustomed to work: I continuously deliver hormones, strictly select substances for the child. Mommy, please, take a walk longer! Do you feel how the baby moves? So he provides himself with more oxygen to be born intelligent and healthy. Help him: more often on the air.
The first degree of maturity! Sorry, diary, while I can not write, very busy!
34-37 weeks
Well, the second degree of maturity. I am perfectly coping with all my many responsibilities and have grown up great. Imagine a cake with a diameter of 15-20 centimeters, a thickness of 2 to 4 centimeters and weighing half a kilogram. It's me!
Third degree of maturity. Has ceased to grow and, apparently, has grown thin. Nothing, but the kid for all time increased almost 800 times and has long outgrown me. Hooray, soon childbirth! And it became harder for me to do the work, salt deposits appeared ... I'm getting old ...
Wow a fight! Hey, young man, are you coming out? Come on, let's speed up! I? Only after you!
OBJECTIVE OBTISTER
Soon after the birth of the baby, a spasm of the arteries and veins of the umbilical cord occurs, interrupting communication with the placenta - a special organ during pregnancy. The rabbit is ready for independent breathing. But, while the umbilical cord is not cut, doctors who take delivery, ensure that the child and the baby's place are on the same level, otherwise part of his blood can flow back. And it's bad for a newborn. The umbilical cord is cut off only when its ripple ends, so that the baby receives oxygen from both sources at the same time for a while. After 15-30 minutes, the placenta is born. Her future fate? In any case it happens ... When giving birth in a hospital, the placenta is sometimes sent for processing for further use in the pharmaceutical industry and cosmetology. Her extract has anti-burn and anti-inflammatory action, prevents aging. At childbirth in the village, even now a child's place is buried and planted on it a tree, which in the future will protect its owner. And in China, the placenta is dried and a preparation is prepared that prolongs youth. It is necessary to make sure that the placenta was born completely. If this does not happen, the doctor will remove the remaining parts in the uterus by hand.
To the place!
Sometimes the placenta is attached to the wall of the uterus lower than necessary for normal delivery. Thus, completely or partially, the uterine cry is crossed, through which the child must exit. A similar situation occurs before the 28th week of every fourth pregnant woman. Fortunately, the baby's place has an amazing ability to change its position as the uterus grows. By the 37th week in most pregnant women everything comes back to normal. Time passes ultrasound! After all, if the placenta is unfavorable for childbirth, a cesarean section will be required.
What is placental insufficiency?
If the placenta does not cope with its function, placental insufficiency arises - a condition that can lead to abnormalities in fetal development. How to protect yourself from this disease?
You have nothing to fear from placental insufficiency, if you do not use such harmful substances as alcohol and drugs, do not smoke, you do not have endocrine disorders and other chronic diseases.
Pass all the ultrasound and, on the recommendation of the doctor, dopplerography - the study of blood flow in the vessels of the placenta - a special organ in pregnancy. In case of detection of any violations, you can start the necessary treatment on time.
A sound and cautious approach
It is extremely important for future mothers not to miss a single ultrasound, appointed by the doctor: only so you can find out where the placenta is located and what its condition is. It depends on this whether the birth will be natural or a cesarean section will be required. Unfortunately, it can not be avoided if the placenta is centrally located and blocks the exit from the uterus. It is also important not to abuse while expecting a baby with calcium. Its excess can lead to blockage of the "filters" of the placenta and the development of intrauterine hypoxia of the fetus. Therefore, eat dairy products in moderation, and take all the vitamins and preparations under medical supervision.