<prompt> Two point threshold test, tests the integrity of:Anterior spinothalamic tractLateral coicospinal tractLateral spinothalamic tractDorsal column  <response>: Dorsal column medial lemniscal system: Fibres mediating fine touch, fine pressure, two point discrimination, proprioception, joint position sense and vibration ascends in the dorsal column. Ref: Ganongs Review of medical physiology, 22 Edition, Page 138. 