part of metathoracic segment adult metathoracic segment metathoracic neuromere adult neuromere adult metathoracic neuromere 2012-11-22T11:09:53Z MtN Meta adult T3 neuromere MetaNm fly_anatomy.ontology FBbt:00110176 The third (anterior-posterior) of the 4 major neuropils of the adult ventral nerve cord (Court et al., 2020). It is mostly composed of the somata and projections of central neurons derived from the metathoracic array of neuroblasts and the axonal projections of sensory afferents from the metathoracic legs and metathorax (Court et al., 2020). Its anterior boundary is best defined by the neuroglian tracts associated with the posterior mesothoracic hemilineages 0, 3, 6, 11, 12, and 21, which also define the posterior margin of the mesothoracic neuromere (Court et al., 2020). The posterior margin of the neuromere is defined by the neuroglian tracts from the posterior hemilineages 0, 3, 6, 20/22 and 21, all of which project anteriorly into the neuromere (Court et al., 2020). VFB:FBbt_00110176 adult thoracic neuromere