Thoracic sympathetic nerve trunk lies: (A) In front of body of veebra, (B) Infront of head of ribs, (C) Anterior to the costal pleura, (D) Behind the sternum
Answer is B. The chain crosses the head of second to tenth rib BD CHAURASIA&;S HUMAN ANATOMY UPPER LIMB THORAX SIXTH EDITION VOL 1PAGE NO 224