VO4/5 motor neuron obsolete A1-7 VO4/5 motor neuron 2013-01-18T03:48:44Z true fly_anatomy.ontology FBbt:00110288 U7,8 neuron Motor neuron developing from the neuroblast NB7-1 lineage. It innervates the internal ventral oblique muscles 4 and 5 of larval abdominal segments A1 to A7. Its dendritic arborization occupies the medial domain of the ventral nerve cord neuropil. It exits the ventral nerve cord via the anterior root of the intersegmental nerve, fasciculating with the ISNd nerve branch and innervates the VO4 and VO5 muscles with type Ib boutons. MN-VO4/5 neuron Obsoleted. Since the only VO4 and VO5 muscles are in segments A1-7 (Bate, 1993), this class is a duplication of its parent (VO4/5 motor neuron). No associated records as at 2018-07-17. MN15/16-I