FB2026_03 , released September 17, 2026
CV Term Report
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Term transmedullary Y neuron TmY3 ID (Ontology) FBbt:00003820 (Fly Anatomy)
Definition Transmedullary Y neuron that terminates with bleb-type arborizations in lobula layers 4 and lobula plate layer 4. It displays fine arborizations in medulla layers M1, M2, M4, M5, M6, M8, and M10, and has bleb-type arborizations in medulla layers M5 and M10. It is cholinergic (Davis et al., 2020).[ FlyBase:FBrf0049410 FlyBase:FBrf0244935 ]
Also Known As"TmY3"
CommentPre- versus postsynaptic innervation judged by scoring of terminal morphology from figures in Fischbach and Dittrich (1989) as assessed by FlyBrain Neuron DB.
Links to External Ontologies
VFB:FBbt_00003820
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Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 transmedullary Y neuron TmY3 (all annotations which use CV term, excluding "NOT" statements)
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transmedullary neuron
 |__transmedullary Y neuron________________
cholinergic neuron                         |
 |__adult cholinergic neuron_______________|
adult neuron                               |
 |__adult cholinergic neuron_______________|
secondary neuron                           |
 |__Notch ON hemilineage secondary neuron__|
Notch ON hemilineage neuron                |
 |__Notch ON hemilineage secondary neuron__|
                                           transmedullary Y neuron TmY3  9 rec.
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Is a transmedullary Y neuron
Notch ON hemilineage secondary neuron
adult cholinergic neuron
Develops from immature transmedullary Y neuron TmY3
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FlyBrain_NDB:10171
VFB:FBbt_00003820