larval VT1 motor neuron obsolete A2-7 VT1 motor neuron 2013-01-18T02:47:33Z true Motor neuron developing from neuroblast NB4-1 lineage that innervates the ventral transverse muscle 1 of abdominal segments 2 to 7. It migrates medially and posteriorly during embryonic development (Schmid et al., 1999). It follows the transverse nerve and synapses to the VT1 muscle in the anterior part of the of the next posterior segment via type Ib boutons (Landgraf et al., 1997; Zarin et al., 2019). VT1 is only found in A2-7 segments (Zarin et al., 2019). fly_anatomy.ontology MN-VT1 FBbt:00110281 A2-7 SM Obsoleted since VT1 may only exists in A2-A7, name is confusing (somas are A1-A6), and even if a VT1 is present in A8, there is no need to have the other neurons separated into their own class.