Review
Copyright ©2014 Baishideng Publishing Group Co.
World J Gastroenterol. Jan 28, 2014; 20(4): 1005-1020
Published online Jan 28, 2014. doi: 10.3748/wjg.v20.i4.1005
Figure 1
Figure 1 Cross section of the spinal cord. The central branches of the visceral afferents innervating the lower gastrointestinal tract travel via the dorsal root ganglia (DRG) and project onto the second order neurons in laminae I, II, V, X of the spinal gray matter. Ascending pathways arise in the anterolateral quadrant (ALQ; purple zone) and the dorsal column (DC; green zone) region in the spinal cord and project to higher brain centers (, medulla, thalamus).