General

The lymph vessels of individual organs merge to form several main collecting trunks, the largest and most important of which is the thoracic duct. These trunks also include the large lymphatic trunks which drain the lymph vessels of the head and neck, the abdominal and pelvic cavity organs, and the pelvic limbs; these are termed the right and left tracheal ducts (ductus trachealis dexter and ductus trachealis sinister), the right lymphatic trunk (truncus lymphaticus dexter), the intestinal trunk (truncus intestinalis), and the lumbar trunk (truncus lumbalis), respectively.