<prompt> Thoracic duct commonly terminates in:Internal jugular veinExternal jugular veinBrachio cephalic veinNone of the above  <response>: In rare individuals there is no apparent thoracic duct on the left. Several terminal openings are frequent 10-40, according to different observers. Patterns vary greatly in different studies, but the commonly repoed sites of termination are internal jugular vein 36-48, jugulo-subclan junction 35 and subclan vein 9 and 17. Termination in the left brachiocephalic vein occurs in 8. 