FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
Help Close All Open All
General Information
Term nodulus ID (Ontology) FBbt:00003680 (Fly Anatomy)
Definition Paired synaptic neuropil domain of the adult brain located just caudal to the ellipsoid body and ventral to the fan-shaped body, on either side of the midline (Hanesch et al., 1989). There are three of these structures, stacked on top of each other from dorsal to ventral, and at least two can be further divided into compartments (Wolff et al., 2015; Wolff and Rubin, 2018). There is asymmetry between the noduli, with one set always lying slightly more anterior than the other (Ito et al., 2014).[ FlyBase:FBrf0049409 FlyBase:FBrf0224194 FlyBase:FBrf0227801 FlyBase:FBrf0240744 ]
Also Known As "NO" ; "no" ; "Nod" (for all, see Synonyms field below)
Comment Ito et al. (2014) state that there are four subunits of one nodulus per hemisphere, but Wolff et al. (2015) and Wolff and Rubin (2018) class the noduli as three distinct units and count 'subunit IV' as part of nodulus 3; here we follow the Wolff nomenclature.
Links to External Ontologies
VFB:FBbt_00003680
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
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Insertions (FBti)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 nodulus (all annotations which use CV term, excluding "NOT" statements)
Spanning Tree (Parents/Children)
Only view relationship:
Vocabulary search
adult cerebrum
 |__adult central complex_______
multi-cell-component structure  |
 |__synaptic neuropil domain____|
adult protocerebrum             |
 |__adult central complex_______|
synaptic neuropil               |
 |__synaptic neuropil domain____|
synaptic neuropil block         |
 |__adult central complex_______|
                                nodulus  671 rec.
                                 |__nodulus 1 4 rec.
                                 |__nodulus 2 4 rec.
                                 |   |__nodulus 2 dorsal domain
                                 |   |__nodulus 2 ventral domain
                                 |__nodulus 3 5 rec.
                                 |   |__nodulus 3 anterior domain
                                 |   |__nodulus 3 medial domain
                                 |   |__nodulus 3 posterior domain 1 rec.
                                 |__nodulus domain 1 rec.
                                     |__nodulus 2 dorsal domain
                                     |__nodulus 2 ventral domain
                                     |__nodulus 3 anterior domain
                                     |__nodulus 3 medial domain
                                     |__nodulus 3 posterior domain 1 rec.
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a synaptic neuropil domain
Develops from embryonic/larval nodulus - primordial
Part of adult central complex
hide Synonyms & Secondary IDs
Synonyms
Secondary IDs
hide External Crossreferences & Linkouts
VFB:FBbt_00003680