The depth of the hymen is relatively shallow, about 5-7 cm from the vaginal opening, and the exact depth is mainly related to the individual woman’s body type. If a woman has a low vagina, the hymen is relatively shallow, about five centimeters deep. If a woman’s vagina is relatively long, the hymen is relatively deep, about seven centimeters deep. The hymen is a very thin and easily ruptured mucous membrane inside the vagina that protects women from gynecological diseases if they have no sexual history. The mucous membrane of the hymen is rich in microvessels and nerve endings, so bleeding and pain can easily occur when having sex for the first time. The hymen is relatively fragile and often strenuous exercise can cause it to rupture.