Bulbs of the vestibule

The bulbs of the vestibule (also known as the vestibular, vestibulovaginal or clitoral bulbs) are conglomerations of erectile soft tissue, collectively homologous to the bulb of the penis. However unlike in the male, the developing bulb is bisected by the vaginal opening to form two halves.

The bulbs are attached to the perineal membrane lateral to the vaginal and urethral orifices. The crura of the clitoris lie lateral to the bulbs. The bulbs fuse anterior to the urethral opening, and then extend forwards to the glans of the clitoris. The bulbs are overlaid by their respective bulbospongiosus muscles.