sends synaptic output to region medulla layer M1 medulla layer M2 medulla tangential neuron medulla tangential neuron Mt9 FBbt:00003845 FlyBrain_NDB:10040 medullary tangential neuron Mt9 Medulla tangential neuron whose axon extends along the proximal side of the medulla, and then extends along the top of the medulla neuropil, only sparing the most posterior part of it. It displays bleb-like terminals throughout the top of medulla layer M1, with a few entering the proximal side of layer M2. VFB:FBbt_00003845 Mt9 fly_anatomy.ontology Pre- versus postsynaptic innervation judged by scoring of terminal morphology from figures in Fischbach and Dittrich (1989) as assessed by FlyBrain Neuron DB. Mt9