FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term seminal vesicle ID (Ontology) FBbt:00004958 (Fly Anatomy)
Definition Enlarged distal region of the vas deferens. It connects the testis, via the testicular duct, to the main region of the vas deferens. The seminal vesicles taper into the twisted narrow portions of the vasa deferentia, which in turn opens into the anterior ejaculatory duct.[ FlyBase:FBrf0007735 ]
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Insertions (FBti)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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Relevant FlyBase reports
 Alleles Genes Images Insertions Constructs
 seminal vesicle (all annotations which use CV term, excluding "NOT" statements)
     seminal vesicle | adult stage
      --       --       --
     seminal vesicle | adult stage | male
      --       --       --       --
     seminal vesicle | progressive | temperature conditional
      --       --       --       --
     seminal vesicle | temperature conditional
      --       --       --       --
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adult
 |__vas deferens_____________________
male reproductive system             |
 |__vas deferens_____________________|
anatomical structure                 |
 |__multicellular structure__________|
male organism                        |
 |__male-specific anatomical entity__|
ectodermal derivative                |
 |__ventral ectoderm derivative______|
male-specific anatomical entity      |
 |__vas deferens_____________________|
multicellular structure              |
 |__vas deferens_____________________|
anatomical entity                    |
 |__male-specific anatomical entity__|
                                     seminal vesicle  188 rec.
                                      |__semen-secreting cell of the seminal vesicle
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Is a ventral ectoderm derivative
male-specific anatomical entity
multicellular structure
Develops from male genital disc
Part of vas deferens
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UBERON:0006868