FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term rectum ID (Ontology) FBbt:00005756 (Fly Anatomy)
Definition Posterior-most portion of the alimentary canal, terminating in the anus.[ FlyBase:FBrf0064792 FlyBase:FBrf0186027 ]
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Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 rectum (all annotations which use CV term, excluding "NOT" statements)
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multi-tissue structure
 |__hindgut_______________
organ system subdivision  |
 |__gut section___________|
gut                       |
 |__gut section___________|
gut section               |
 |__hindgut_______________|
                          rectum  145 rec.
                           |__adult posterior hindgut 31 rec.
                           |   |__adult posterior hindgut circular muscle cell(+)
                           |   |__adult posterior hindgut longitudinal muscle cell
                           |   |__adult rectal sac(+) 17 rec.
                           |   |__adult rectal valve 1 rec.
                           |   |__female adult posterior hindgut
                           |   |__male adult posterior hindgut
                           |__anus 54 rec.
                           |   |__adult anus 14 rec.
                           |   |__embryonic/larval anus(+) 40 rec.
                           |__embryonic rectum 56 rec.
                           |__embryonic/larval rectum 56 rec.
                               |__embryonic/larval anus(+) 40 rec.
                               |__larval rectal sphincter cell 8 rec.
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Is a gut section
Part of hindgut
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UBERON:0006866