Fig. 1. Schematic representation of the stomatogastric nervous system, including the location of the anterior cardiac plexi (ACPs). The paired ACPs are located on the anterior cardiac nerves (acns) which overlie the cardiac sac region of the foregut. aln, anterior lateral nerve; coc, circumoesophageal connective; CoG, commissural ganglion; dgn, dorsal gastric nerve; dlvn, dorsal lateral ventricular nerve; dpon, dorsal posterior oesophageal nerve; dvn, dorsal ventricular nerve; ion, inferior oesophageal nerve; ivn, inferior ventricular nerve; lgn, lateral gastric nerve; ln, labral nerve; lpn, lateral pyloric nerve; lvn, lateral ventricular nerve; mvn, medial ventricular nerve; OG, oesophageal ganglion; on, oesophageal nerve; pdn, pyloric dilator nerve; psn, pyloric sensory nerve; pyn, pyloric nerve; son, superior oesophageal nerve; STG, stomatogastric ganglion; stn, stomatogastric nerve; vlvn, ventral lateral ventricular nerve.