Physiology Sensory System 62f4bbb6 The first-order (primary afferent) cell bodies of the dorsal column-medial lemniscal system are found in which structure? A Spinal cord dorsal horn B Spinal cord ventral horn C Dorsal root ganglia D Nucleus cuneatus High-Yield Explanation Primary afferent neuronal cell bodies are found in the dorsal root ganglia.