FB2026_03 , released September 17, 2026
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Term testicular duct ID (Ontology) FBbt:00004957 (Fly Anatomy)
Definition Duct connecting the testis and the seminal vesicles in the adult male genitalia. It is 80 micrometers long and 23 micrometers in diameter, making a single spiral turn. It has a narrow lumen, surrounded by a thick epithelium containing small, closely spaced nuclei. It is covered in an inner sheath and an outer pigment sheath, as in the seminal vesicles.[ FlyBase:FBrf0007735 ]
Also Known As"vas efferens"
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reproductive system
 |__male reproductive system_________
male organism                        |
 |__male-specific anatomical entity__|
epithelial tube                      |
 |__duct_____________________________|
male-specific anatomical entity      |
 |__male reproductive system_________|
anatomical entity                    |
 |__male-specific anatomical entity__|
                                     testicular duct  4 rec.
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Is a male-specific anatomical entity
duct
Part of male reproductive system
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