Where does lymph from the right lymphatic duct empty?

The lymph from the right lymphatic duct specifically empties into the right subclavian vein. This vessel serves as a major pathway for the drainage of lymphatic fluid from the right upper body, including the right arm, right side of the head, neck, and certain regions of the thorax. The right lymphatic duct collects lymph from these areas and channels it directly into the right subclavian vein, where it mixes with venous blood before returning to the heart.

This anatomical arrangement is crucial for maintaining fluid balance in the body and playing a role in the immune response, as it ensures that lymphatic fluid, which contains proteins and immune cells, can be returned to the circulatory system efficiently. The right subclavian vein acts as the final point for the right lymphatic duct's drainage before the lymph re-enters systemic circulation.