Thoracic duct opens into: (A) Subclan vein, (B) Internal jugular vein, (C) Right brachiocephalic vein, (D) Left brachiocephalic vein
Answer is D. In the neck, it arches laterally at the level of the transverse process of seventh cervical veebra. Finally it descends in front of the first pa of the left subclan aery and ends by opening into the angle of junction between the left subclan and left internal jugular veins ( both these left subclan and left internal jugular vein drains into left brachiocephalic vein ) <img src=" /> Ref : B D Chaurasia's Human Anatomy , seventh edition , volume 1, pg. no. 302