THORACIC DUCT Intestinal+ two lumbar trunk=cisterna chili L1-L2 cisterna chili=thoracic duct Ascends sup up to T5 in post mediastinum between azygos vein and aorta—right Crosses posterior an ascends to adjacent to the left side of esophagus ; then posterior to subclavian artery Arches over the subclavian artery and empties into the jugular vein