FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term seminal receptacle ID (Ontology) FBbt:00004922 (Fly Anatomy)
Definition Coiled epithelial tube connected to the anterior ventral part of the uterus (Heifetz and Rivlin, 2010; McQueen et al., 2022). The tube is approximately 2 millimeters long, with a funnel-shaped entrance, a narrow proximal region and a wide distal region (Heifetz and Rivlin, 2010). The proximal region is lined by an epithelium with dense microvilli covered by a thick extracellular matrix (Heifetz and Rivlin, 2010). The epithelium of the distal region has its microvilli arranged in a highly ordered brush border covered by a thin extracellular matrix (Heifetz and Rivlin, 2010). External to the epithelium is a basal lamina surrounded by a circular muscle layer (Heifetz and Rivlin, 2010). After mating, sperm are stored in this organ and remain active and motile (Heifetz and Rivlin, 2010).[ FlyBase:FBrf0210152 FlyBase:FBrf0253444 ]
Also Known As"tubular receptacle" ; "ventral receptacle"
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 Alleles Genes Images Insertions Constructs
 seminal receptacle (all annotations which use CV term, excluding "NOT" statements)
     seminal receptacle | ectopic
      --       --       --
     seminal receptacle | maternal effect
      --       --       --       --
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female reproductive system
 |__sperm storage organ____________
epithelium                         |
 |__epithelial tube________________|
female-specific anatomical entity  |
 |__sperm storage organ____________|
multicellular structure            |
 |__sperm storage organ____________|
                                   seminal receptacle  63 rec.
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Is a epithelial tube
sperm storage organ
Develops from presumptive seminal receptacle
Part of
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