Vaginal opening

Dr Daniel J Bell et al.

The vaginal opening, is also known as the introitus (plural: introituses), vaginal orifice, or ostium vaginae (plural: ostia vaginarum) (TA) .

The entrance to the vagina lies in the vestibule of the vulva in the median plane. It has an anteroposterior orientation and is partially covered by the hymen, which usually has a central perforation, for the monthly passage of menses. 

  • anterior: urethral opening
  • posterior: superficial perineal body
  • lateral: labia minora

In general when introitus is used without additional qualifying terms it refers to the vaginal opening 1,2.

Introitus is from the Latin words, 'intro' meaning 'within', and the verb 'ire' meaning 'to go' 2.

Anatomy: Abdominopelvic

Anatomy: Abdominopelvic

Article information

rID: 73049
Section: Anatomy
Synonyms or Alternate Spellings:
  • Vaginal orifices
  • Ostia vaginarum
  • Ostium vaginae
  • Vaginal orifice
  • Introitus
  • Introituses

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