FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term proventriculus inner layer ID (Ontology) FBbt:00005753 (Fly Anatomy)
Definition The inner layer of the proventriculus, produced from the invagination of the posterior region of the esophagus (foregut). It is formed by a simple low cuboidal epithelium. The cuticle the lines the inner wall is thicker than other regions in the cardia, and it forms several longitudinal folds, causing the esophageal lumen to appear irregular in cross section.[ FlyBase:FBrf0048518 FlyBase:FBrf0064792 ]
Also Known As "inner 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 Insertions
 proventriculus inner layer (all annotations which use CV term, excluding "NOT" statements)       2      1
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  epithelial tube
   |__gut epithelial section
       |__proventriculus inner layer  3 rec.
           |__adult proventriculus inner layer
           |__embryonic/larval proventriculus inner layer
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Is a gut epithelial section
Part of proventriculus
foregut epithelium
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