FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term transmedullary neuron Tm5Y ID (Ontology) FBbt:00003831 (Fly Anatomy)
Definition Transmedullary narrow field neuron that terminates in lobula layers 4 and 5 with bleb-type arborizations. It displays fine arborizations in medulla layers M3, M4, M5, M6, M8 and the serpentine layer, and has bleb-type terminals in layers M6 and M8 (Morante and Desplan, 2008; Fischbach and Dittrich, 1989). It differs from transmedullary neuron Tm and transmedullary Y neuron TmY5 in that individuals of a retinotopic set may or may not form branches in the lobula plate (Fischbach and Dittrich, 1989).[ FlyBase:FBrf0049410 FlyBase:FBrf0204652 ]
Also Known As "Tm5f" ; "Tm5Y"
Comment Pre- 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_00003831
Annotations
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Data Class Field Records
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       2
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 Insertions
 transmedullary neuron Tm5Y (all annotations which use CV term, excluding "NOT" statements)       2
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transmedullary neuron
 |__transmedullary Y neuron______________
 |__narrow field transmedullary neuron___|
optic lobe narrow field columnar neuron  |
 |__narrow field transmedullary neuron___|
                                         transmedullary neuron Tm5Y  2 rec.
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Is a transmedullary Y neuron
narrow field transmedullary neuron
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Synonyms
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FlyBrain_NDB:10158
FlyBrain_NDB:10159
VFB:FBbt_00003831