The hymen is divided into three stages to count the mysterious role of the hymen.

The hymen is a membrane-like fold around the vaginal orifice, which covers the vaginal orifice and has a defensive effect on the vagina. It is divided into 7 types in medical clinic: umbrella shape, ring shape, semilunar shape, lip shape, sieve shape, septum shape, non-perforated hymen and so on.
The hymen goes through three stages of change in a woman's life:
Girlhood:
Hymen cover near the outer mouth of the vagina, about 1-2 mm thick, there is a small hole in the middle, called "hymen hole", about 1 cm in diameter, usually round, oval or serrated; some are semilunar giant dildo , the membrane hole is partial to one side; some are septal holes, there are two small holes for up and down or left and right side by side; some have many scattered holes, like a sieve.
During menstruation, menstrual blood is excreted through this small hole. If there is no small hole in the membrane, the monthly menstrual blood is blocked, accumulates in the vagina, extends upward to the uterine cavity and fallopian tube, and even flows into the abdominal cavity, resulting in fallopian tube damage, intestinal adhesion, abdominal infection, medically known as "hymen atresia", gynecological surgery must be performed.
Before puberty, because the ovary secretes less estrogen, the vaginal mucosa is thin, the wrinkle wall is less, the acidity is low, and the resistance is weak, the hymen can prevent bacteria from invading the vagina. After puberty, with the development of the ovaries, the increase of estrogen in the body and the strengthening of vaginal resistance, the hymen loses its function.
First night:
The first sexual intercourse, the hymen was broken and formed a fissure, and caused bleeding.
Due to the different shapes of the hymen, the degree of rupture will vary greatly. The septal hymen with two holes has more bleeding, accompanied by more severe pain. Labial hymen bleeds very little, almost painless. The umbrella-shaped hymen, which is thick and flexible, may not rupture at all!
According to a survey by American gynecologists, about 30% of women do not bleed during their first sexual intercourse. This 30% includes the more flexible umbrella-shaped hymen, which may break after multiple intercourse or after a crazy sex trip girl butt , but may not bleed. It also includes the highly ruptured porous sieve hymen, which may have ruptured for a variety of reasons before the first sexual intercourse.
After giving birth:
The hymen is further damaged as the fetus is delivered through the vagina. Sometimes only a few remaining protuberances are left, called hymen marks. This change does not occur during caesarean section.
Count the mysterious role of the hymen
The hymen is part of the female reproductive organs. The appearance, development and formation of the fetus at 3-4 months, and the shape and thickness of the hymen at puberty. The pores can be wheeled, annular, semilunar, sieve and other forms. It is located in the vaginal orifice, vaginal vestibule in a layer of mucosal tissue, showing a ring of wrinkles, about 0.5 cm wide, with holes in the middle to facilitate the outflow of menstrual blood and secretions.
Hymen is not found in other female animals and is unique to human women, only a very small number of women are born without hymen, and only a very small number of women have no pores on their hymen, so they are called "stone girls".
Hymen as a barrier of external genitalia, from a physiological point of view, it is an obstacle to the life of both sexes, is to prevent the penis from entering the vagina.
It should be said that the role of the hymen in the sex life is not good for the man, but it will bring some pain to the woman, and the hymen is disadvantageous to 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 "tenacious resistance" of the hymen makes the man "unable to attack for a long time", the man will ejaculate too quickly because he is too excited and nervous. if the man carries the ideological burden as a result, it may become a reason for premature ejaculation in the future.
In addition, if the woman is nervous and the man is too impatient or rude, in the case of the first sexual intercourse cheap sex toys , the woman may also have some pain, thus leaving a strong psychological shadow to the woman. so that some women in the marriage for a long time to form apathy, vaginal spasm. Therefore, the emergence of sexual dysfunction in both men and women has something to do with the existence of hymen.
With the development of human society today, the hymen of most mature women will be revealed because of the combination of men and women, leaving only deformed fragments. In this way, from the point of view of purchase theory, the hymen seems to be a redundant organ. However, another principle of "survival of the fittest" in nature applies everywhere. "use, waste and retreat" is also an important law of nature. Since the hymen has a negative impact on the virgin sex life of both men and women, and will be broken sooner or later, why let it exist?
After discussion, some scholars have put forward the following two hypotheses:
1. Protect the female reproductive system: this theory holds that the hymen plays a protective role in the female reproductive system and even the body. It is a barrier to protect oneself from the invasion of disease and evil. The hymen guards the door of the vagina, which prevents urine from entering the vagina. In ancient times, women did not have dresses. At most, they had a piece of animal skin around their lower body. the open lower body was easy to cause the invasion of bacteria. While the vaginal wall of the girl is relatively thin, and the ovary is not fully developed, it all depends on the barrier of hymen to protect the internal reproductive system and protect the fertility of women. Some scholars believe that before the age of 16 or 18, a woman's body is not fully developed and the hymen is very thick, which is a warning device to avoid having sex prematurely. For women, having sex prematurely is easy to cause cervical cancer due to repeated infection of the cervix. Moreover, the early start of sex life, eugenics, will also have a negative impact. The hymen precisely plays such a preventive role. Because for men, to have sex with immature girls, it is difficult to overcome the still very tough treatment membrane line of defense. For women dildo shop , premature sex life will bring considerable spasm to their own body. According to the survey of medical scientists, when the hymen is broken, about 2 more than 3 will feel pain, accompanied by bleeding. The earlier you get married, the more obvious this phenomenon is.
2. It is used to select the strong men: according to this theory, the main function of the hymen is to select the strong men and promote the excellent sperm to enter the body for fertilization.
In the period of human primitive society, human marriage was relatively free and chaotic. There is no right choice, no age bondage and restrictions. The combination of the sexes is very random. The existence of hymen can prevent the possession of young girls by elderly men and people with low sexual function. This can reduce or prevent the birth of less optimized offspring, with the significance of selecting the evolution of the strong. Because, the sexual ability of the elderly is relatively weak, most of the impotent are also poor physique or sick people.
There is a certain correlation between sexual ability and physical strength. The existence of hymen has become a test of sexual ability. The breakers are strong patent numbers, which can leave the genes of their offspring, while those who cannot enter are often weak, and they have little or no chance to breed. This natural law of survival of the fittest, realized by the test of hymen, may be one of many methods.
There seems to be some truth in both theories. So which of these two reasons does nature have? Or are these two reasons working together?
But so far, there is not much strong anthropological evidence to prove these theories, especially the latter. Or nature itself has not completely eliminated this meaningless small film in the process of restocking. Therefore, the answer to the mystery of the real role of hymen may continue to be explored and debated.
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