<prompt> Appreciation of shape and size of an object placed in the hand is lost in the lesion ofTractus gracilisTractus cuneatusLateral spinathalamic tractSpino - reticular tract  <response>: Ans. b Tractus cuneatusRef: Ganong, 25th edp.168Appreciation of shape and size of an object placed in the hand is a function of Tractus cuneatus 