part of abdominal segment 1 larval abdominal segment 1 larval transverse nerve larval abdominal 1 transverse nerve 2023-01-11T13:04:43Z VFB:FBbt_00052540 Gorczyca et al. (1994) - FBrf0075005 claim that this does not exist, despite what appears to be an A1 nerve in their figure 2A. FBbt:00052540 fly_anatomy.ontology Larval transverse nerve found in abdominal segment 1. A parasympathetic organ is found at its base and it bifurcates relatively close to its exit point from the ventral nerve cord (Santos et al., 2006). Since there is no VT1 muscle in this segment (Campos-Ortega and Hartenstein, 1997), this nerve does not carry a VT1 motor neuron, unlike transverse nerves in other segments. larval A1 transverse nerve