Final answer:
The veins that drain the ovary, uterus, and vagina are the ovarian veins and the uterine veins. The ovarian veins empty into the inferior vena cava or the left renal vein, while the uterine veins connect with the ovarian veins to form the utero-ovarian plexus.
Step-by-step explanation:
The veins that drain the ovary, uterus, and vagina are called the ovarian veins and the uterine veins.
The ovarian veins drain blood from the ovaries. The right ovarian vein empties directly into the inferior vena cava, while the left ovarian vein empties into the left renal vein.
The uterine veins drain blood from the uterus. These veins connect with the ovarian veins and form a network of blood vessels called the utero-ovarian plexus, which is also known as the ovarian plexus. The uterine and vaginal veins contribute to the extensive network of veins known as the uterine venous plexus and the vaginal venous plexus, respectively. These plexuses are part of the broader pelvic venous system that drains deoxygenated blood from the reproductive organs.