What two large collecting vessels return lymph to the circulatory system?

The major lymphatic duct is the Thoracic Duct which returns lymph from the the whole body except from the right side of the head and the right arm/shoulder. These parts are drained by the Subclavian Trunk. Both vessels drain into the junction of the subclavian and jugular veins on their respective sides. Hope this helps! Aj :) The right lymphatic duct drains lymph from the right upper extremity, head, and thorax. This duct is not present in all. For those with no right lymphatic duct, the lymph trunks drain directly into the veins of the neck