Vagina orifice

Definition

The median slit located inferior and posterior to the external urethral orifice in the female; the exit for menstrual flow and birth and the entrance for the penis during sexual intercourse; the size and appearance of the vaginal orifice varies inversely with that of the hymen (G. membrane), a thin fold of mucous membrane that surrounds the vaginal orifice.

Also known as opening of vagina, orifice of vagina, ostium vaginae, vagina opening, vaginal orifice — per UBERON

The Vagina orifice is a part of the Reproductive.