A lymph duct is a great lymphatic vessel that empties lymph into one of the subclavian veins.

The right lymphatic duct drains lymph from the right upper limb, right side of thorax and right halves of head and neck.

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

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