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For these reasons, virginity cannot be definitively determined by examining the hymen.
The length of the vagina varies between women of child-bearing age.
The opening of the vagina lies in the urogenital triangle.
It may be that the incorrect use of the term vagina is due to not as much thought going into the anatomy of the female genitals as has gone into the study of male genitals, and that this has contributed to an absence of correct vocabulary for the external female genitalia among both the general public and health professionals.
Because of this and because a better understanding of female genitalia can help combat sexual and psychological harm with regard to female development, researchers endorse correct terminology for the vulva.
Because of the presence of the cervix in the front wall of the vagina, there is a difference in length between the front wall, approximately 7.5 cm (2.5 to 3 in) long, and the back wall, approximately 9 cm (3.5 in) long.
During sexual arousal, the vagina expands both in length and width.
Because of this, the collapsed vagina has an H-shaped cross section.
Where the vaginal lumen surrounds the cervix of the uterus, it is divided into four continuous regions or vaginal fornices; these are the anterior, posterior, right lateral, and left lateral fornices.
When not sexually aroused, the vagina is a collapsed tube, with the front (anterior) and back (posterior) walls placed together.
The lateral walls, especially their middle area, are relatively more rigid.
The vagina allows for sexual intercourse and birth.
It also channels menstrual flow (menses), which occurs in humans and closely related primates as part of the monthly menstrual cycle.
The vaginal canal travels upwards and backwards, between the urethra at the front, and the rectum at the back.Tags: Adult Dating, affair dating, sex dating