FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term tracheal transverse connective primordium ID (Ontology) FBbt:00005580 (Fly Anatomy)
Definition Region of the tracheal primordium that develops into the embryonic/larval transverse connective. During stages 11 and 12, the invaginating tracheal pit forms an L shape. The arm of the L heading inwards from the surface forms the spiracular branch primordium, the other arm forms the transverse connective primordium.[ FlyBase:FBrf0064787 ]
Also Known As "embryonic transverse connective"
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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      10
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       4
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN       2
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Relevant FlyBase reports
 Alleles Genes Images Insertions Constructs
 tracheal transverse connective primordium (all annotations which use CV term, excluding "NOT" statements)      10      2      3      4      2
Spanning Tree (Parents/Children)
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developing embryonic structure
 |__primary segmental tracheal branch primordium__
primordium                                        |
 |__tracheal branch primordium____________________|
 |__primary segmental tracheal branch primordium__|
                                                  tracheal transverse connective primordium  21 rec.
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Is a tracheal branch primordium
primary segmental tracheal branch primordium
Part of tracheal pit
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Synonyms
  • "a and b branch" RELATED
    "embryonic transverse connective" EXACT
    "outer segmental trachea" RELATED
    "ventral segmental trachea" RELATED
Secondary IDs
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