Back then, I was still working at the grassroots level, and most of the patients who came for treatment were rural women. A very young and honest couple came that day. It was said that they had not conceived a child even after a year of marriage.
Out of conventional thinking, I first arranged a gynecological examination for my wife, but during the examination, I was surprised to find that this girl was still a virgin. After asking about it, I found out that people in rural areas have sexual perversions and rarely receive any sex education before marriage. On the wedding night, although the husband was very excited, he didn’t know what to do. During the friction, he unexpectedly discovered that both of them were attracted to each other. If you can get sexual pleasure, you will learn it by yourself without any teacher, and you will take it for granted that this is sex.
This kind of \”sex life\” lasted for a year without conceiving a child. The mother-in-law first began to doubt the girl\’s fertility, so she strongly asked the couple to come to me for \”medical treatment.\” But I didn’t expect that the “disease” was indeed a disease, but it was a disease caused by lack of knowledge.
Coincidentally, according to media reports, a couple in Hubei who were about 30 years old and had a master\’s degree and doctorate were infertile after three years of marriage. They went to the Reproductive Medicine Center of the province for medical treatment. The test results were not that the man had a problem or that the woman was unable to give birth. But after staying in the laboratory for a long time, I didn’t know what “sleeping in the same room” meant, and thought that sharing the same room meant sleeping together.
So, necessary and correct sexual knowledge is the first step in married life. As a member of the animal kingdom, mating can be said to be a natural instinct, but in the process of natural growth, there is a lack of knowledge. , biased guidance and traditional moral constraints make it difficult for some people to obtain correct sexual knowledge, and they are unable to explore their own instincts under moral constraints. This sounds like a joke, but it is a tragedy and an educational failure.
Sex is very important in the process of giving birth to life, and necessary sexual knowledge is also the guarantee of a good sexual life.
Okay, let’s get down to business. Only with a healthy sex life can you get pregnant. Of course, healthy sperm can successfully combine with healthy eggs. To achieve union, you must first have a correct sex life. The sperm and egg combine to form a fertilized egg, which then implants into the endometrium and grows and develops, which is called conception. But conception also requires conditions. What conditions are needed for the union of sperm and egg?
After reading this, I believe friends who have read all the way have a clearer understanding. Conception is a relatively complicated process. To complete this process, we must first have healthy sperm and healthy eggs.
I have said before that the volume of semen ejaculated by a normal adult man at one time is 2 to 6 ml. The number of sperm in each ml of semen should be more than 60 million, and the number of motile sperm can reachMore than 60%, abnormal sperm is less than 15% to 20%. If the sperm does not meet the above standards, it will not be easy for the woman to get pregnant. Therefore, one of the first conditions is that the expectant father\’s testicles can produce a certain amount of healthy sperm.
Having healthy sperm is not enough. In view of the cyclical discharge of female eggs, it is also necessary to ensure that there are healthy and mature eggs, and they must be discharged normally. It is worth noting here that we have already said in the previous chapter that women have a time to ovulate. Women with normal menstruation will release a healthy and mature egg every menstrual cycle. This can provide the first condition for pregnancy. Only if this is met conditions, women have a chance to conceive. For women with ovarian insufficiency or irregular menstruation, it is difficult to get pregnant easily.
When the two necessary conditions are met, we need to have normal sex life before and after ovulation, and ensure that men have ejaculation, so that sperm and eggs have the opportunity to meet and fertilize. However, pregnancy will not occur during the non-ovulatory period or when a man does not ejaculate.
So this requires that the male\’s vas deferens must be unobstructed so that sperm can be discharged; the female\’s reproductive tract must also be unobstructed, so that the sperm injected into the female vagina can reach the fallopian tube without any obstruction and combine with the egg. Encounter fertilization. The fertilized egg can also live in the uterine cavity smoothly.
Is it certain that pregnancy will occur after fertilization? The answer is still \”not necessarily\”, because the environment in a woman\’s uterus must be suitable for the implantation and development of a fertilized egg. After the egg is fertilized, it moves toward the uterus as it develops. It reaches the uterine cavity after 3 to 4 days. It hides in the nutrient-rich endometrium in 6 to 8 days, and then continues to develop into a fetus. The development of the fertilized egg and the growth of the endometrium proceed simultaneously. If the fertilized egg arrives early or is delayed in entering the uterine cavity, the endometrium at this time will not be suitable for the fertilized egg to implant and continue to develop, and pregnancy will not be possible.
Only when the above-mentioned conditions are met and each one is indispensable, can we wait quietly for the good news of pregnancy. Otherwise, we can only miss the good news of pregnancy.
Many people have given birth to children, but few know how the sperm successfully combines with the egg and implants in the bed. So, how do the sperm and the egg combine?
At most, 300 million sperm will enter the vagina during one sexual intercourse. The fastest time for sperm to reach the fallopian tube from the vagina is only a few minutes, the latest is 4 to 6 hours, and generally 1 to 1.5 hours. As the sperm advance, they are blocked by cervical mucus and engulfed by white blood cells in the uterine cavity. Only dozens or even one or two hundred sperm finally reach the fallopian tube. Before fertilizing the egg, the sperm must undergo a period of incubation in the female reproductive cavity and undergo morphological, physiological, and biochemical changes before it has the ability to fertilize. This process is called sperm capacitation.
Sperm can survive in the female fallopian tube for 1 to 3 days, and eggs can survive for about 1 day. For example, if a woman has sex within a few days before and after ovulation, sperm and eggs may meet in the ampulla of the fallopian tube. At this time, a group of sperm will Surrounding the egg, the head of the capacitated sperm secretes acrosome enzyme to dissolve the corona radiata around the egg.and the zona pellucida, opening the way for the sperm to enter the egg. In the end, only one sperm enters the egg. After the sperm completely enters the egg, through nuclear fusion, the 23 chromosomes of the father and mother combine into 46 (23 pairs) chromosomes, and then form A new cell is called a fertilized egg or pregnant egg, and this process is called fertilization. This is the beginning of a new life.
The fertilized egg undergoes cell division 24 hours after fertilization. The fertilized egg absorbs nutrients and oxygen from the fluid secreted by the fallopian tube and continues to divide. At the same time, through the peristalsis of the fallopian tube, the fertilized egg gradually moves toward the uterine cavity, reaching the uterine cavity after 3 to 4 days. When it reaches the uterine cavity, it has developed into a solid cell mass with 12 to 16 cells. At this time, it is shaped like a morula, so it is called a morula. The morula continues cell division in the uterine cavity, increases in size, and develops lacunae and cellular fluid. The fertilized egg at this time is called a blastocyst or blastocyst. About 6 to 8 days after fertilization, the zona pellucida of the blastocyst disappears and enters the endometrium. This process, that is, the implantation of the pregnant egg, is called implantation or implantation. This process takes approximately 4 to 5 days. The site where the pregnant egg implants is mostly on the back wall of the upper part of the uterine cavity, followed by the front wall, and occasionally on the side wall. At this time, some people may experience slight bleeding.
At this time, after the blastocyst implants, its cells continue to differentiate and form three germ layers: ectoderm, mesoderm and endoderm, and accordingly develop into various tissues and organs of the fetus at different gestational weeks. organ. The ectoderm mainly differentiates into the nervous system, skin epidermis and hair; the mesoderm mainly differentiates into the muscles, bones, blood system, circulatory system and most of the urogenital system; the endoderm mainly differentiates into the epithelial tissues of the digestive system, respiratory system and About glands etc. At this time, pregnant women have stopped menstruating for 5 to 8 weeks, and the fertilized egg develops into an embryo, which develops into a fetus after 9 weeks. The placenta and other fetal appendages are partly formed from the differentiation of blastocyst cells and partly from the differentiation of maternal cells.
At this point, everyone should have understood that when a healthy man and a healthy woman start having sexual intercourse, they have to go through a very complex and wonderful process to give birth to a new life. This new life The emergence of the world requires the right time, right place, and the right people, all of which are indispensable.
This article is provided by Baidu Reading. It is excerpted from \”Very Good Pregnancy: You Can Get Pregnant by Doing This\” Author: Yu Yue\’e