FB2026_03 , released September 17, 2026
CV Term Report
Help Close All Open All
General Information
Term larval mesothoracic intersegmental nerve ID (Ontology) FBbt:00002104 (Fly Anatomy)
Definition Larval intersegmental nerve of the mesothoracic segment. Similar to the A1-A7 nerves, it has two roots; an anterior root that is formed by neurons of the anteriorly adjacent neuromere, and a posterior root, that is formed by neurons of the same neuromere as the nerve (Campos-Ortega and Hartenstein, 1997). Proximally it shares a glial sheath with the segmental nerve (Campos-Ortega and Hartenstein, 1997). It receives a branch from the mesothoracic lateral sensory cluster (Campos-Ortega and Hartenstein, 1997). Its main trunk continues dorsally and innervates the dorsal sensory cluster and dorsal musculature (Campos-Ortega and Hartenstein, 1997).[ FlyBase:FBrf0089570 ]
Also Known As"mesothoracic anterior fascicle"
Comment
Links to External Ontologies
VFB:FBbt_00002104
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)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 Insertions Constructs
 larval mesothoracic intersegmental nerve (all annotations which use CV term, excluding "NOT" statements)
     larval mesothoracic intersegmental nerve | adult stage | dorsal
      --
Spanning Tree (Parents/Children)
Only view relationship:
Vocabulary search
mesothoracic segment
 |__larval mesothoracic segment___
 |__mesothoracic nerve____________|
larval thoracic segment           |
 |__larval mesothoracic segment___|
nerve                             |
 |__larval intersegmental nerve___|
 |__mesothoracic nerve____________|
larval peripheral nervous system  |
 |__larval intersegmental nerve___|
                                  larval mesothoracic intersegmental nerve  15 rec.
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a larval intersegmental nerve
mesothoracic nerve
Part of larval mesothoracic segment
hide Synonyms & Secondary IDs
Synonyms
  • "ISN" BROAD
    "mesothoracic anterior fascicle" EXACT
Secondary IDs
hide External Crossreferences & Linkouts
VFB:FBbt_00002104