We just learned that the iliac veins bring deoxygenated blood from the pelvis area back toward the heart.
Next the blood goes into a large vein called the inferior venae cavae.
This vein goes all the way up to the heart and drops off the deoxygenated blood.
![inferior venae cavae](https://upload.wikimedia.org/wikipedia/commons/4/4d/Gray577.png)
(from: wikipedia - inferior venae cavae)
Kid Facts - Blast from the past: Transverse Colon