Apr 21, 2013 · LYMPH NODES acts as a barrier to the spread of the disease . Virchow in 1860 42. CAN BE DIVIDED INTO;a) SUPERFICIAL CHAIN OF LYMPH NODES…..b) VERTICAL DEEP CHAIN OF LYMPH NODES This consists of nodes lying in relation to carotid sheath.These lie along the vessels,trachea,oesophagusand extend from base of skull to root of neck. 43. 1.