FB2026_03 , released September 17, 2026
CV Term Report
Help Close All Open All
General Information
Term adult ellipsoid body extrinsic ring neuron ID (Ontology) FBbt:00003654 (Fly Anatomy)
Definition Ring neuron with extensive arborizations outside of the ellipsoid body (Hanesch et al., 1989; Omoto et al., 2018). Unlike the R-neurons, these neurons do not develop from neuroblast DALv2 (Omoto et al., 2018), and some of these cells are derived from each of BAmv1, DM6, DM4, and DM3 (Kandimalla et al., 2023). There are usually only one or two of each type of extrinsic ring neuron per hemisphere (Hulse et al., 2021).[ FlyBase:FBrf0049409 FlyBase:FBrf0240929 FlyBase:FBrf0254510 FlyBase:FBrf0257023 ]
Also Known As"ExR" ; "ExR-neuron" ; "extrinsic ring neuron"
Comment
Links to External Ontologies
VFB:FBbt_00003654
Annotations
Records annotated with this term OR any of its CHILD TERMS

Choose a record type to view annotations for this term and its child terms. Direct annotations and full annotation statements below also provide HitList buttons.

    • Results list data from multiple species. Choose a record type above to open its HitList.
Direct annotations: records annotated with this exact term (child terms are NOT included)
Data ClassFieldDirect annotations
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Insertions Constructs
 adult ellipsoid body extrinsic ring neuron (all annotations which use CV term, excluding "NOT" statements)
Spanning Tree (Parents/Children)
Only view relationship:
Vocabulary search 
  large field neuron of the central complex
   |__adult ellipsoid body ring neuron
       |__adult ellipsoid body extrinsic ring neuron  36 rec.
           |__adult ellipsoid body extrinsic ring neuron ExR1 5 rec.
           |   |__adult ExR1 neuron of DM3 lineage
           |   |__adult ExR1 neuron of DM4 lineage
           |__adult ellipsoid body extrinsic ring neuron ExR3
           |__adult ellipsoid body extrinsic ring neuron ExR4
           |__adult ellipsoid body extrinsic ring neuron ExR5
           |__adult ellipsoid body extrinsic ring neuron ExR6
           |__adult ellipsoid body extrinsic ring neuron ExR7
           |   |__adult ExR7 neuron of DM3 lineage
           |   |__adult ExR7 neuron of DM4 lineage
           |__adult ellipsoid body extrinsic ring neuron ExR8
           |   |__adult ExR8 neuron of DM3 lineage
           |   |__adult ExR8 neuron of DM4 lineage
           |__EB neuron of the dopaminergic PPM3 cluster 28 rec.
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a adult ellipsoid body ring neuron
Part of
hide Synonyms & Secondary IDs
Synonyms
Secondary IDs
hide External Crossreferences & Linkouts
VFB:FBbt_00003654