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Vaginal orifice

Recommended video: Uterus and vagina [24:25]
Structure of the uterus and vagina seen in an anterior coronal section.

The vaginal orifice, also known as the introitus, is a median slit marking the entrance to the vagina. It is surrounded by the vaginal vestibule, which is exposed with spreading of the labia.

The vaginal orifice may be partially covered by the hymen, a membrane formed by inward folding mucosa of the vaginal lumen. The hymen is normally incomplete. It has a central perforation to allow for passage of menstrual flow.

The vaginal orifice is found posterior to the urethral orifice, anterior to the superficial perineal body and medial to the labia minora.

Terminology English: Vaginal orifice

: Ostium vaginae
Synonym: Orificium vaginae
Definition The vaginal orifice is the opening to the vaginal canal.

Learn more about the cervix, vagina and vulva in the following study unit:

Vaginal orifice: want to learn more about it?

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