<prompt> Which of the following regions of the spinal cord is involved first in Friedreichs Ataxia:Dorsal Root ganglionSpinal tractsPeripheral nerveCerebellum  <response>: Answer is A Dorsal Root Ganglion: The first pathological changes in Friedreichs ataxia are thought to occur in the dorsal root ganglia with loss of large sensory neurons Ref: Clinical Neurology by Goetz. 