Starting from where the shaft and crura meet, and continuing down along the sides of the vestibule, are two bundles of erectile tissue called the bulbs of the vestibule.
Vaginas 101: Everything You Need to Know About the Vagina
Search Go. This causes the vagina to elongate and the cervix, or tip of the uterus, to lift up slightly, allowing more of a penis, finger, or sex toy to fit in the vagina. Please note: Vaginal Opening and Hymen Below the opening of the urethra is the vaginal opening introitus. Women's preferences for penis size: