Fig. 1.

Schematic representation of the stomatogastric nervous system of Homarus americanus. The stomatogastric nervous system (STNS) consists of four ganglia as well as the nerves that connect them and motor nerves that innervate the muscles of the gastric mill and pylorus. coc, circumoesophageal connective; CoG, commissural ganglion; dgn, dorsal gastric nerve; dlvn, dorsal lateral ventricular nerve; dvn, dorsal ventricular nerve; dpon, dorsal posteror oesophageal nerve; icn, inferior cardiac nerve; ion, inferior oesophageal nerve; ln, labral nerve; mvn, medial ventricular nerve; OG, oesophageal ganglion; on, oesophageal nerve; pdn, pyloric dilator nerve; son, superior oesophageal nerve; stn, stomatogastric nerve; vlvn, ventral lateral ventricular nerve.