A venous plexus is complex network of interconnected blood vessels. The vaginal venous plexus is comprised of small veins on the sides of the vagina, located near the uterine veins. Branches of this plexus communicate with the uterine and rectal venous plexuses. The vaginal plexus acts like a tributary, or a vein that drains into another vein.

The vaginal plexus surrounds the bladder and contains some arteries, including the middle vesical artery and the inferior vesical artery. The vaginal venous plexus communicates with the hemorrhoidal plexus, a network of veins around the rectum, and the uterine plexus, which arises from the sides of the uterus. The hemorrhoidal network of veins is also called the rectal venous plexus.

The vaginal venous plexus pushes blood into a system of internal iliac veins. These veins, located in the pelvis, unite with other veins, including the external iliac vein and the common iliac vein.