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Hymen

The hymen is a thin piece of mucosal tissue that surrounds or partially covers the vaginal opening. A small percentage of females are born with hymens that are imperforate and completely obstruct the vaginal canal. It forms part of the vulva and is similar in structure to the vagina. The word is from the Greek ὑμήν meaning a thin skin or membrane. Many mammals possess hymens due to similar reproductive development.

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