What is "common iliac vein?

The common iliac vein is an important vessel that plays a crucial role in the circulatory system of the human body. It is responsible for draining deoxygenated blood from the lower limbs, pelvis, and abdominal organs. After receiving blood from the internal and external iliac veins, it continues its journey by joining the corresponding vein from the opposite side to form the inferior vena cava, which then transports the blood back to the heart for oxygenation.