Lymph duct

A lymph duct is a great lymphatic vessel that empties lymph into one of the subclavian veins. There are two lymph ducts in the body&mdash;the right lymph duct and the thoracic duct. The former drains lymph from the right upper limb, right side of thorax and right halves of head and neck.

These vessels have three layers in their walls comparable to the great veins.