FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term larval intersegmental nerve ID (Ontology) FBbt:00001997 (Fly Anatomy)
Definition Larval nerve found in segments T1-A7 that has two roots, carrying fibers from the neuromere of the nerve and the immediately anterior neuromere (Campos-Ortega and Hartenstein, 1997). It exits the lateral ventral nerve cord in line with the anterior commissure and its proximal region shares a glial sheath with the segmental nerve (Campos-Ortega and Hartenstein, 1997). It extends further dorsally than the segmental nerve, innervating dorsal and lateral groups of muscles and sense organs (Campos-Ortega and Hartenstein, 1997).[ FlyBase:FBrf0089570 ]
Also Known As "anterior fascicle" ; "ISN"
Comment
Links to External Ontologies
VFB:FBbt_00001997
Annotations
Records annotated with this term OR any of its CHILD TERMS
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN     363
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       3
Insertions (FBti)  PHENOTYPE_MANIFEST_IN     150
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      62
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 Images Insertions Constructs
 larval intersegmental nerve (all annotations which use CV term, excluding "NOT" statements)     363     17      1    153     63
     larval intersegmental nerve | distal       2       --       --       --       1
     larval intersegmental nerve | embryonic stage      39       --       --      11      6
     larval intersegmental nerve | embryonic stage 16       7       --       --       1      2
     larval intersegmental nerve | embryonic stage | maternal effect       2       --       --       --       --
     larval intersegmental nerve | heat sensitive       6       --       --       2       --
     larval intersegmental nerve | larval stage       1       --       --       --       --
     larval intersegmental nerve | third instar larval stage       3       --       --       --       1
Spanning Tree (Parents/Children)
Only view relationship:
  neuron projection bundle
   |__nerve
       |__larval intersegmental nerve  834 rec.
           |__larval abdominal intersegmental nerve 307 rec.
           |__larval mesothoracic intersegmental nerve 15 rec.
           |__larval metathoracic intersegmental nerve 14 rec.
           |__larval prothoracic intersegmental nerve 12 rec.
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Is a nerve
Part of larval peripheral nervous system
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Synonyms
  • "anterior fascicle" EXACT
    "ISN" EXACT
Secondary IDs
hide External Crossreferences & Linkouts
VFB:FBbt_00001997