FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term pars intercerebralis ID (Ontology) FBbt:00005802 (Fly Anatomy)
Definition Cell body rind region that lies in a medial cleft dividing the left and right superior protocerebrum, anterior to the calyces of the mushroom bodies and dorsal to the central complex. It contains numerous large and small somata of neurosecretory and neuromodulatory neurons. In the larva, these neurons are split into bilaterally symmetric clusters on either side of the medial cleft whereas in the adult they are one unpaired cluster (Siegmund and Korge, 2001, Velasco et al., 2007).[ FlyBase:FBrf0134726 FlyBase:FBrf0193772 FlyBase:FBrf0224194 ]
Also Known As"PI"
CommentIto et al. (2014) may further subdivide cortex/rind regions into multiple facets. Subdivisions should be denoted by the addition of a single letter body-axis direction, e.g. rLHa for anterior to the lateral horn; rSMPm for medial to the superior medial protocerebrum, etc.
Links to External Ontologies
VFB:FBbt_00005802
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Data ClassFieldDirect annotations
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 pars intercerebralis (all annotations which use CV term, excluding "NOT" statements)
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central nervous system
 |__brain_____________________________________
multi-tissue structure                        |
 |__brain_____________________________________|
multi-cell-component structure                |
 |__cell body rind region_____________________|
cell body rind of the central nervous system  |
 |__cell body rind region_____________________|
                                              pars intercerebralis  213 rec.
                                               |__adult pars intercerebralis 166 rec.
                                               |   |__adult anterior pars intercerebralis
                                               |   |__adult dorsal pars intercerebralis
                                               |   |__adult posterior pars intercerebralis
                                               |__embryonic pars intercerebralis 32 rec.
                                               |__larval pars intercerebralis 9 rec.
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Is a cell body rind region
Part of brain
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Synonyms
  • "PI" EXACT
Secondary IDs
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UBERON:0001059
VFB:FBbt_00005802