1, the change stage of hymen
Girlhood:
The hymen covers the female private parts near the external mouth, with a thickness of about 1-2 mm, and a small hole in the middle, called "hymen hole", with a diameter of about 1 cm, which is usually round, oval or zigzag. Some are half-moon-shaped, and the membrane holes are biased to one side; Some are special-shaped holes, and the two small holes are juxtaposed up and down or left and right; Some have many scattered holes, just like a sieve.
During menstruation, menstrual blood is discharged through this small hole. If there is no hole in the membrane, menstrual blood will be blocked, accumulate in women's private parts, spread upward to uterine cavity and fallopian tube, and even flow into abdominal cavity, resulting in fallopian tube injury, intestinal adhesion and abdominal infection, which is medically called "imperforate hymen" and must be operated on by gynecology.
Before our puberty, the hymen has the function of preventing bacteria from invading women's private parts because the ovary secretes less estrogen, the mucous membrane is thin, the wall wrinkles are few, the acidity is low and the resistance is weak. After puberty, with the development of ovaries, estrogen in the body increases, the resistance of female private parts increases, and the hymen loses its function.
The first night:
The first time I slept together, the hymen broke and formed cracks, which led to bleeding.
Due to the different forms of hymen, the degree of rupture will vary greatly. The diaphragm hymen with two holes has more bleeding and more severe pain. The labia hymen has less bleeding and almost no pain. The thick and elastic umbrella hymen may not break at all!
According to the survey of American gynecologists, about 30% women didn't bleed when they first shared a bed. This 30% includes the elastic umbrella hymen, which may rupture after multiple sexual intercourse or a crazy sexual journey, but it does not necessarily bleed. It also includes porous sieve hymen, which is easy to break. It may have been broken for various reasons before the first sexual intercourse.
After delivery:
Because the fetus was delivered through the female private parts, the hymen was further damaged.
Sometimes there are only some residual protrusions left, which are called hymen marks.
This change will not happen by caesarean section.
2. The role of hymen
(1) The function of hymen shows a feature of women.
As a barrier to external genitalia, the female hymen is an obstacle to sexual life from a physiological point of view and a barrier to prevent Tintin from entering female private parts.
It should be said that the role of hymen in sexual life is not good for the man, but will bring some pain to the woman, and the hymen is not good for both husband and wife. In sexual life, it may also pose a threat to the sexual physiology and psychology of both men and women. If the "stubborn resistance" of the hymen makes the man "unable to have an attack for a long time", the man will ejaculate too quickly because he is too excited and nervous. If the man has a mental burden, it may become a cause of premature ejaculation in the future.
In addition, if the woman is nervous and the man is too impatient or rude, the woman may also have some pain in the case of sharing a room for the first time, which will leave a strong psychological shadow on the woman and make some women form sexual apathy and female privates spasm for a long time after marriage. Therefore, the emergence of sexual dysfunction in both men and women is not unrelated to the existence of hymen.
(2) The protective effect of hymen on female reproductive system
According to this theory, the hymen has a protective effect on women's reproductive system and even their bodies. It is a barrier to protect yourself from disease and evil. The hymen guards the door of women's private parts and can prevent urine from entering women's private parts.
In ancient times, women had no dresses. At most, they wrap an animal skin in their lower body, and the open lower body is easy to cause bacterial invasion. However, girls' private parts are relatively thin and their ovaries are not fully developed. They rely on hymen as a barrier to protect the internal reproductive system and women's fertility.
For women, premature sexual life will bring considerable convulsions to the body. According to the investigation of medical experts, about two-thirds of women will feel pain when their hymen breaks, accompanied by bleeding. The earlier you get married, the more obvious this phenomenon is.
(3) The role of hymen is to choose the strong among men.
According to this theory, the main function of hymen is to select the strongest male, thus promoting excellent sperm to enter the body for fertilization.
In primitive human society, human marriage is relatively free and chaotic. There is no suitable choice, no age constraints and restrictions. The combination of sexes is very random. The existence of hymen can prevent the possession of girls by elderly men and people with sexual dysfunction. This can reduce or prevent the generation of suboptimal offspring, which has the significance of selecting the strong to evolve.
There is a certain correlation between sexual ability and physical strength. The existence of hymen has become a barrier to test sexual ability. Those who break the customs are all strong patent numbers, which can leave the genes of future generations. It is often the weak who cannot enter, and they have little or no chance to reproduce. This natural law of survival of the fittest is realized through the examination of hymen, which may be one of many methods.
But so far, there is not much strong evidence in anthropology to prove these theories, especially the latter. Or nature itself has not completely eliminated this insignificant little movie in the process of evolution. Therefore, the mystery of the real function of hymen may continue to be explored and debated.
These are all explaining the function of the female hymen, what the hymen brings to women, and the answers to these questions, but there is still one thing that everyone must know, that is, the female hymen determines the health of the female private parts. Therefore, when having sex, many women want men to choose condoms, so that roommates will be healthier.