FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term larval rectal sphincter cell ID (Ontology) FBbt:00048236 (Fly Anatomy)
Definition Muscle cell of the thick muscle that acts as a sphincter and is located at the narrow posterior end of the larval hindgut. This muscle contracts as part of a cycle with other posterior hindgut muscles to expel feces.[ FlyBase:FBrf0226857 ]
Also Known As"larval anal sphincter" ; "larval anus sphincter"
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 larval rectal sphincter cell (all annotations which use CV term, excluding "NOT" statements)
     larval rectal sphincter cell | conditional
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larval visceral muscle cell
 |__embryonic/larval hindgut muscle cell__
embryonic/larval hindgut                  |
 |__embryonic/larval rectum_______________|
hindgut muscle cell                       |
 |__embryonic/larval hindgut muscle cell__|
rectum                                    |
 |__embryonic/larval rectum_______________|
posterior ectoderm derivative             |
 |__embryonic/larval rectum_______________|
somatic cell of embryonic/larval hindgut  |
 |__embryonic/larval hindgut muscle cell__|
                                          larval rectal sphincter cell  8 rec.
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Is a embryonic/larval hindgut muscle cell
Part of embryonic/larval rectum
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