Question

Thoracic duct in humans is associated with

• A. Aorta
• B. Hepatic duct
• C. Purkinje fibre
• D. Innominate vein

Answer 1

Answer: (D)

Innominate vein

The thoracic duct is the biggest lymphatic vessel in the human body. It is also called the left lymphatic duct or the alimentary duct. A large part of the body's lymph is collected by this duct and drained into the bloodstream near the brachiocephalic vein between the internal jugular veins and the left subclavian. The vessel originates from the level of the second lumbar vertebra and extends to the root of the neck. On the right side of the neck, the right lymphatic duct conveys the lymph from the head and neck, the upper extremity and the right side of the thorax to the right innominate vein.

So, the correct answer is option D.