testis [FBbt_00004928]
testis
ID: FBbt_00004928
Tube of the male reproductive system connected to the seminal vesicle at the basal end. It is a tube 1.9mm long and 90-100 micrometers in diameter, with the basal half helically coiled and the distal half forming a freely extended arc. The coiled portion is spirally wound twice around a center occupied by the testicular duct and the distal portion of the seminal vesicle. The wall of the testis consists of two very thin layers containing widely spaced nuclei: an inner sheath and an outer sheath composed of small flattened polygonal cells that contain yellow pigment granules. The development of germline cells takes place in the testis.
Open in VFB 3D Browser →Relationships
- develops from: larval testis
- is part of: adult, male reproductive system
Parts of testis (83 total)
| Thumbnail | Name | Tags |
|---|---|---|
| apolar primary spermatocyte cyst | Adult, Anatomy | |
| mature primary spermatocyte cyst | Adult, Anatomy | |
| secondary spermatocyte in meiotic anaphase II | Adult, Cell | |
| secondary spermatocyte in meiotic metaphase II | Adult, Cell | |
| secondary spermatocyte in meiotic telophase II | Adult, Cell |
Expression patterns overlapping testis (49 total)
| Thumbnail | Name | Tags |
|---|---|---|
| P{A92}R20a expression pattern | Expression_pattern | |
| P{A92}fs(?)BP73[BP73] expression pattern | Expression_pattern | |
| P{A92}fs(?)BL54[BL54] expression pattern | Expression_pattern | |
| P{A92}fs(2)BA37[BA37] expression pattern | Expression_pattern | |
| P{A92}fs(3)BA32[BA32] expression pattern | Expression_pattern |
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