has characteristic has soma location fasciculates with has synaptic IO in region sends synaptic output to cell mesothoracic neuron adult anterior dorsal mesothoracic nerve ventral tp motor neuron Motor neuron that arborizes in the wing neuropil and innervates tergopleural muscle 2, ipsilaterally (Trimarchi and Schneiderman, 1994). It has a small, roughly spherical soma, located mediolaterally, ventral to the level of the posterior dorsal mesothoracic nerve root (Trimarchi and Schneiderman, 1994). Its axon exits the ventral nerve cord in the anterior dorsal mesothoracic nerve (Trimarchi and Schneiderman, 1994). Within the ventral nerve cord, it extends medially, arborizing in the dorsal medial mesothoracic neuromere and wing neuropil, with some neurites crossing the midline and some reaching the posterior prothoracic neuromere (Trimarchi and Schneiderman, 1994; Ehrhardt et al., 2023). A posteriorly-directed branch innervates the ipsilateral dorsal metathoracic (haltere) nerve root (Trimarchi and Schneiderman, 1994). In the male, it plays a role in many aspects of courtship song generation (O'Sullivan et al., 2018; Ehrhardt et al., 2023). fly_anatomy.ontology VFB:FBbt_00004072 tp2_MN tergopleural 2 motor neuron vtpmn FBbt:00004072 tp2_MN tp2 MN indirect flight muscle motor neuron wing neuropil muscle cell of tergopleural muscle 2 adult dorsal metathoracic nerve root flight control muscle motor neuron adult prothoracic neuromere cell body rind of adult mesothoracic neuromere bilateral