fasciculates with sends synaptic output to cell adult labial nerve adult labial motor neuron muscle cell of proboscis muscle 2 ventral proboscis muscle 2 ventral motor neuron 2021-03-29T15:45:20Z proboscis motor neuron mn2V VFB:FBbt_00051183 fly_anatomy.ontology Motor neuron that innervates proboscis muscle 2 ventral, which retracts the rostrum (McKellar et al., 2020). Its soma is found in a ventral part of the cell body rind of the subesophageal zone (McKellar et al., 2020). It arborizes in the ventral subesophageal zone and travels to the proboscis via the labial nerve (McKellar et al., 2020). FBbt:00051183 rostrum muscle motor neuron