has characteristic has soma location fasciculates with capable of part of has synaptic IO in region sends synaptic output to cell mesothoracic neuron muscle cell of wing basalar muscle b1 adult anterior dorsal mesothoracic nerve direct flight muscle motor neuron wing basalar muscle b1 motor neuron b1mn b1Mn fly_anatomy.ontology VFB:FBbt_00004066 b1_MN b1_MN Motor neuron that innervates the direct flight muscle 49 (b1) ipsilaterally (Trimarchi and Schneiderman, 1994). It has a large disk-shaped soma, found ventral to the root of the anterior dorsal mesothoracic nerve, through which its axon leaves the ventral nerve cord (Trimarchi and Schneiderman, 1994). It has a large posterior branch that projects into and arborizes within the root of the dorsal metathoracic (haltere) nerve (Trimarchi and Schneiderman, 1994). It also has a large branch that crosses the midline and arborizes in the contralateral lateral wing neuropil (Trimarchi and Schneiderman, 1994). Two smaller branches arborize in the dorsal and lateral ipsilateral wing neuropil (Trimarchi and Schneiderman, 1994). It is required for normal coordination of wing movement during flight (Sadaf et al., 2015). FBbt:00004066 wing neuropil adult dorsal metathoracic nerve root cell body rind of adult mesothoracic neuromere flight bilateral