FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term spiracular chamber ID (Ontology) FBbt:00000426 (Fly Anatomy)
Definition Epithelial tube that connects the spiracular branch 10 derived from the dorsal trunk to the embryonic/larval posterior spiracle. At one end, it is lined with cuticular threads call filzkorper, covered in oily secretions from the spiracular gland. At the other end, the chamber divides into 3 flattened branches that terminate at the surface as three major spiracular openings.[ FlyBase:FBrf0064787 FlyBase:FBrf0111388 ]
Also Known As "atrial chamber" ; "felt chamber" ; "spiracular atrium"
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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       7
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       1
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       1
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN       2
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Relevant FlyBase reports
 Alleles Genes Images Insertions Constructs
 spiracular chamber (all annotations which use CV term, excluding "NOT" statements)       7      5      1      2      4
Spanning Tree (Parents/Children)
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  epithelium
   |__epithelial tube
       |__spiracular chamber  330 rec.
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Is a epithelial tube
Part of embryonic/larval posterior spiracle
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