<prompt> After sexual intercourse, the intact hymen usually rupturesAnteriorlyIn the midline posteriorlyOn one side onlyOn both sides  <response>: The hymen is a fold of mucous membrane, about 1 mm thick, situated at the vaginal outlet. In a prepubeal victim, vaginal penetration usually results in tearing of the hymen in the posterior 180deg, i.e. Between 3 and 9 oclock position. Ref - Krishan Vij textbook of forensic medicine and toxicology 5e pg : 315 