FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term larval segmental nerve ID (Ontology) FBbt:00002037 (Fly Anatomy)
Definition Larval nerve found in segments T1-A7 that has two roots, both carrying fibers from the neuromere of the nerve (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 intersegmental nerve (Campos-Ortega and Hartenstein, 1997). It does not extend as far dorsally as the intersegmental nerve, and mainly innervates ventral muscles and sense organs (Campos-Ortega and Hartenstein, 1997).[ FlyBase:FBrf0089570 ]
Also Known As "larval SN"
Comment
Links to External Ontologies
VFB:FBbt_00002037
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     112
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       2
Insertions (FBti)  PHENOTYPE_MANIFEST_IN      31
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      38
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 segmental nerve (all annotations which use CV term, excluding "NOT" statements)     112     16      1     33     39
     larval segmental nerve | conditional       9       --       --       --       5
     larval segmental nerve | embryonic stage       8       --       --       2      1
     larval segmental nerve | embryonic stage | maternal effect       1       --       --       --       --
     larval segmental nerve | larval stage       2       --       --       --       1
     larval segmental nerve | third instar larval stage      17       --       --       3      9
Spanning Tree (Parents/Children)
Only view relationship:
  neuron projection bundle
   |__nerve
       |__larval segmental nerve  493 rec.
           |__larval abdominal segmental nerve 297 rec.
           |__larval mesothoracic segmental nerve 5 rec.
           |__larval metathoracic segmental nerve 4 rec.
           |__larval prothoracic segmental nerve 5 rec.
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Is a nerve
Part of larval peripheral nervous system
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Synonyms
  • "larval SN" EXACT
    "posterior fascicle" RELATED
Secondary IDs
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VFB:FBbt_00002037