Hymen and hymen repair related knowledge

　　Why is the hymen born?
　　
　　Every part of our body is a masterpiece of God, and its construction and function are always unparalleled in precision and ingenuity. So, what is the function of the hymen? Why is there no “hymen”? Is it really God’s requirement? female of chastity?
　　
　　After years of research, anthropologists have proposed two theories:
　　
　　Protection theory: The vaginal wall of a girl is relatively thin and her ovaries are immature. The hymen plays a very important role in blocking the invasion of germs, protecting the internal reproductive system and maintaining fertility.
　　
　　Sexual selection theory: The function of the hymen is selection male The strong among them make the good sperm Entering the vagina for conception has important evolutionary significance. In ancient times, human sexual unions were very arbitrary, and the existence of the hymen could prevent men with low sexual function from occupying women. There is a certain correlation between sexual function and physical strength. People with weak physical strength usually have lower sexual function. The hymen forms a checkpoint. Only those who break the "check" can enter and leave their genes to future generations.
　　
　　The three stages of change of the hymen
　　
　　Girls' Generation:
　　
　　The hymen covers the vagina near the external opening, about 1 to 2 mm thick, with a small hole in the middle, called the "hymen hole", with a diameter of about 1 cm, usually round, oval or zigzag-shaped; some are half-moon-shaped, with the membrane hole on one side; some are septum-shaped holes, with two small holes juxtaposed up and down or left and right; some have many scattered small holes, like a sieve.
　　
　　During menstruation, menstrual blood is discharged from the body through this small hole. If there are no holes in the membrane, monthly menstrual blood will be blocked, accumulate in the vagina, and expand upward Uterus cavity and fallopian tube, and even flow into the abdominal cavity, causing damage to the fallopian tube, intestinal adhesion, and abdominal infection, which is medically called "hymenal atresia" and must be performed. Gynecology Operation.
　　
　　Before puberty, because the ovaries secrete less estrogen, the vaginal mucosa is thin, has fewer wrinkles, low acidity, and weak resistance. The hymen has the function of blocking bacteria from invading the vagina. After puberty, with the development of the ovaries, estrogen in the body increases, vaginal resistance strengthens, and the hymen loses its role.