The hymen is broken. It is a layer of plastic film with a hole in the center covering the outer opening of the female vagina, located at the junction of the vagina and the vestibule. Both sides of the plastic film are light pink and the surface is moist. The hymen of adolescents is smaller and thicker. As the woman's body matures, the hymen will gradually become larger and thinner, and have greater elasticity. Before puberty, women's reproductive organs have not fully developed, the mucous membrane in the vagina is relatively incomplete and the acidity is low, so it cannot prevent the invasion of bacteria. At this time, the hymen is relatively thick, so it takes on this burden and plays a role in protecting the female urinary system. After puberty, women's reproductive organs gradually grow and develop, and the vagina has long had the function of resisting the invasion of bacteria, but the hymen is broken and gradually becomes weaker and weaker, thus losing this function. Therefore, for fully grown women, the rupture of the hymen no longer has any endocrine system. Regarding the effects of ruptured hymen, the protective theory is: the vaginal wall of a girl is relatively thin, and the development of the uterus and ovaries is not perfect. The rupture of the hymen plays a very important role in blocking the invasion of bacteria, protecting the endocrine system, and maintaining reproductive function. Sexual selection theory: The role of the rupture of the hymen is to select the strongest among men, so that high-quality sperm can enter the vagina for pregnancy, which has important evolutionary significance. In the ancient legendary god-cultivation era, human sexual intercourse was very blind, and the existence of a broken hymen could prevent men with low sexual function from assaulting women. There is a certain relationship between male sexual function and energy. Men with weak energy generally have low sexual function. The breaking of the hymen creates a test copy. Only those who break the "barrier" can pass on their own genetic genes to future generations. As female insects grow, the shape of the hymen in adults begins to become more and more different, and some individuals are even born without a hymen. Of course, the reason why some animals have no hymen is that the hymen disappears during the embryonic period, and such animals usually come into estrus early. |
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