Written by the Fiveable Content Team • Last updated August 2025
Written by the Fiveable Content Team • Last updated August 2025
Definition
The external iliac vein is a large vein that carries deoxygenated blood from the lower limbs back to the heart. It merges with the internal iliac vein to form the common iliac vein, which then contributes to the inferior vena cava.
Inferior Vena Cava: The largest vein in the human body that carries deoxygenated blood from the lower and middle parts of the body to the right atrium of the heart.
Internal Iliac Vein: A vein that drains blood from organs in the pelvic region and merges with the external iliac vein to form the common iliac vein.
Common Iliac Vein: Formed by the union of the internal and external iliac veins, it transports deoxygenated blood to the inferior vena cava