Editing Vagina (section)

====Variations and size====
{{Main|Human vaginal size}}
The length of the vagina [[anatomical variation|varies]] among women of child-bearing age. 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&nbsp;cm (2.5 to 3 in) long, and the back wall, approximately 9&nbsp;cm (3.5&nbsp;in) long.<ref name="Dutta"/><ref name="Wylie"/>  During sexual arousal, the vagina expands both in length and width. If a woman stands upright, the vaginal canal points in an upward-backward direction and forms an angle of approximately 45 degrees with the uterus.<ref name="Dutta"/><ref name="Elsevier Obstetrics"/> The vaginal opening and hymen also vary in size; in children, although the hymen commonly appears [[crescent]]-shaped, many shapes are possible.<ref name="Dutta"/><ref name="Emans">{{cite book|vauthors=Emans SJ|chapter=Physical Examination of the Child and Adolescent|title=Evaluation of the Sexually Abused Child: A Medical Textbook and Photographic Atlas|edition=2nd|publisher=[[Oxford University Press]]|pages=61–65|isbn=978-0-19-974782-5|date=2000|chapter-url=https://books.google.com/books?id=3eQZhs4PwrYC|access-date=August 2, 2015|archive-date=July 4, 2019|archive-url=https://web.archive.org/web/20190704044740/https://books.google.com/books?id=3eQZhs4PwrYC|url-status=live}}</ref>