The azygos vein
is a blood
vessel that runs up the right side of the spinal column. This vein
carries blood from the right lumbar veins
to the superior vena cava, which leads to the right atrium of the heart. On the left side the system functions differently, with the hemiazygos and accessory hemiazygos veins. These veins then join with the azygos vein, thus completing a finely intricate venous network.
Original article published by
. Translated by Jeff