part of innervates continuous with supraesophageal nerve adult head frontal ganglion adult tritocerebrum frontal nerve adult frontal nerve 2010-11-29T02:21:15Z fly_anatomy.ontology FrN VFB:FBbt_00100330 The adult frontal nerve contains a variety of fibers, largely from interneurons, and connects the tritocerebrum and the frontal ganglion (an unpaired structure on the anterior side of the esophagus) (Ito et al., 2014). It is fused with the labral nerve to form the labro-frontal nerve (Ito et al., 2014). FBbt:00100330 adult labro-frontal nerve