FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term proventriculus outer layer ID (Ontology) FBbt:00005755 (Fly Anatomy)
Definition The outer layer of the proventriculus, produced from the anterior projection of the endodermal midgut which grows over the esophagus. It can be divided into 2 zones, with the anterior region being formed by columnar cells and the posterior region by cuboidal cells. It is covered by a loose network of muscle fibers.[ FlyBase:FBrf0048518 FlyBase:FBrf0064792 ]
Also Known As "outer wall of the cardia"
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Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN       2
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       1
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 Alleles Genes Insertions
 proventriculus outer layer (all annotations which use CV term, excluding "NOT" statements)       2      1      1
Spanning Tree (Parents/Children)
Only view relationship:
  epithelial tube
   |__gut epithelial section
       |__proventriculus outer layer  16 rec.
           |__adult proventriculus outer layer
           |__embryonic/larval proventriculus outer layer 12 rec.
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Is a gut epithelial section
Part of proventriculus
midgut epithelium
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