GENERAL HISTOLOGY

Detailed explanation-1: -The thoracic duct drains lymph into the circulatory system at the left brachiocephalic vein between the left subclavian and left internal jugular veins.

Detailed explanation-2: -Lymph from the left upper body also enters the thoracic duct. The right lymphatic duct empties the lymph into the right subclavian vein of the blood circulation, while the thoracic duct connects with the left subclavian vein.

Detailed explanation-3: -The lymphatic ducts empty the lymph into your subclavian veins. These veins, located below your collarbone, join to form the superior vena cava. The vena cava returns clean lymphatic fluid to your bloodstream.