part of central nervous system subesophageal ganglion spider_anatomy 2013-06-14T10:55:09Z The central body is an unpaired midline neuropil. It is a part of the central complex. It is composed of tangential and columnar neurons. These neurons form horizontal layers and provide a connection to the lateral accessory lobes and the protocerebral bridge. Subpopulations of the columnar neurons cross the midline of the syncerebrum within the central body or before entering the central body. SPD:0000626 Peter Michalik