Figure 5.

Summary diagram depicting the course of axons arising from postsynaptic DC neurons in the visceral processing region adjacent to the central canal. Axons arising from neurons near the central canal at sacral levels of the spinal cord ascend in the midline of the DC adjacent to the medial septum to innervate the medial gracile nucleus. Axons arising from neurons near the central canal at thoracic levels of the spinal cord ascend in the DC adjacent to the dorsal intermediate septum and innervate both the gracile and cuneate nuclei.