GENERAL HISTOLOGY

Detailed explanation-1: -The internal, external, and common iliac nodes drain the pelvis and its contents, while the inferior epigastric vein empties into the external iliac vein . For example, the contents of the pelvic viscera are drained by the internal iliac nodes while being surrounded by branches of the internal iliac vessels.

Detailed explanation-2: -Higher up, near the fifth vertebra in your spine, the right common iliac vein and left common iliac vein come together to create the inferior vena cava. The inferior vena cava is your body’s largest vein. It carries oxygen-poor blood from your lower body to your heart.

Detailed explanation-3: -The internal pudendal vein drains to the internal iliac vein, whereas the median sacral veins drain into the common iliac vessels directly. The median sacral veins unite into a single vessel before entering the left common iliac vein.