Supraesophageal ganglion
![Supraesophageal ganglion(5), Subesophageal ganglion(31)](/Images/godic/202501/08/Robal1600.png")
The supraesophageal ganglion (arthropod brain) is the first part of the insect central nervous system. It receives and processes information from the first, second, and third metameres. The supraesophageal ganglion lies dorsal to the esophagus and consists of three parts, each a pair of ganglia: