The opening to the vagina is called the introitus. Before puberty, it may be nearly closed. During the reproductive-age years, and especially after vaginal intercourse, the opening to the vagina is usually wide and stretchy. The stretchiness is due to elastic fibers under the skin that allow it to stretch in all directions. In addition, estrogen causes the mucus-producing glands located at the vaginal opening to secrete mucus on a regular basis, with larger amounts produced during sexual arousal.
More About this Book
Our Bodies, Ourselves: Menopause
Continue Learning about Women's Health
Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.