adult abdominal segment nerve adult second abdominal nerve fly_anatomy.ontology nerve of the second abdominal segment Ab2Nv extra metathoracic nerve EMN AbN2 Nerve that apparently emerges in the dorsalmost region of the adult metathoracic neuromere but contains axons that originate/terminate in the second abdominal neuromere (Power, 1948; Court et al., 2020). The nerve projects postero-laterally to the most posterior-lateral corner of the thorax, where it innervates transverse tubular muscles (Power, 1948; Court et al., 2020). This nerve also contains the afferent fibers from a multiscolophorous organ located on the ventral surface of the second abdominal segment (Shepherd and Smith, 1996; Court et al., 2020). abdominal segment 2 nerve FBbt:00004106 VFB:FBbt_00004106