FB2026_03 , released September 17, 2026
CV Term Report
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Term fan-shaped body tangential neuron ID (Ontology) FBbt:00003657 (Fly Anatomy)
Definition Neuron with a large arborization field that fills a layer of the fan-shaped body (FB) in both the transverse and longitudinal directions (Hanesch et al., 1989; Hulse et al., 2021). Their arbors do not usually show a separation into columns (Hanesch et al., 1989). As a population, these neurons arborize in all FB layers, but most cells target one layer (Hanesch et al., 1989; Hulse et al., 2021). They generally receive input in other regions and have presynaptic sites in the FB, but some are intrinsic to the FB (Hulse et al., 2021).[ FlyBase:FBrf0049409 FlyBase:FBrf0254510 ]
Also Known As"F-neuron" ; "fan shaped neuron" ; "fan-shaped neuron" (for all, see Synonyms field below)
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VFB:FBbt_00003657
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Insertions (FBti)PHENOTYPE_MANIFEST_IN
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 Alleles Genes Insertions
 fan-shaped body tangential neuron (all annotations which use CV term, excluding "NOT" statements)
     fan-shaped body tangential neuron | adult stage
      --
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adult brain___________________
large field neuron____________|
adult central complex neuron__|
adult interneuron_____________|
                              large field neuron of the central complex
                               |__fan-shaped body tangential neuron  121 rec.
                                   |__adult dorsal fan-shaped body tangential neuron 73 rec.
                                   |   |__adult fan-shaped body layer 6 tangential neuron(+) 5 rec.
                                   |   |__adult fan-shaped body layer 7 tangential neuron(+) 5 rec.
                                   |   |__adult fan-shaped body layer 8 tangential neuron(+)
                                   |   |__adult fan-shaped body layer 9 tangential neuron(+)
                                   |   |__adult lateral fan-shaped body tangential neuron Fl7
                                   |   |__adult lateral fan-shaped body tangential-protocerebrum neuron ExFl2 13 rec.
                                   |   |__dFB neuron of the dopaminergic PPL1 cluster(+) 60 rec.
                                   |__adult lateral fan-shaped body tangential neuron 17 rec.
                                   |   |__adult lateral fan-shaped body tangential neuron Fl1
                                   |   |__adult lateral fan-shaped body tangential neuron Fl2 1 rec.
                                   |   |__adult lateral fan-shaped body tangential neuron Fl3
                                   |   |__adult lateral fan-shaped body tangential neuron Fl4
                                   |   |__adult lateral fan-shaped body tangential neuron Fl7
                                   |   |__adult lateral fan-shaped body tangential-ellipsoid body neuron FE1
                                   |   |__adult lateral fan-shaped body tangential-protocerebrum neuron ExFl1 3 rec.
                                   |   |__adult lateral fan-shaped body tangential-protocerebrum neuron ExFl2 13 rec.
                                   |   |__adult lateral fan-shaped body tangential-protocerebrum neuron ExFl3
                                   |__adult median bundle fan-shaped body tangential neuron 8 rec.
                                   |   |__adult median bundle fan-shaped body tangential neuron 1 1 rec.
                                   |   |__adult median bundle fan-shaped body tangential neuron 2 1 rec.
                                   |   |__adult median bundle fan-shaped body tangential neuron 3 4 rec.
                                   |__adult ventral fan-shaped body tangential neuron 74 rec.
                                       |__adult fan-shaped body layer 1 tangential neuron(+) 3 rec.
                                       |__adult fan-shaped body layer 2 tangential neuron(+) 55 rec.
                                       |__adult fan-shaped body layer 3 tangential neuron(+)
                                       |__adult fan-shaped body layer 4 tangential neuron(+) 33 rec.
                                       |__adult fan-shaped body layer 5 tangential neuron(+) 5 rec.
                                       |__adult median bundle fan-shaped body tangential neuron 1 1 rec.
                                       |__adult median bundle fan-shaped body tangential neuron 2 1 rec.
                                       |__adult median bundle fan-shaped body tangential neuron 3 4 rec.
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Is a large field neuron of the central complex
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VFB:FBbt_00003657