FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
CV Term Report
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General Information
Term embryonic/larval proventriculus ID (Ontology) FBbt:00001871 (Fly Anatomy)
Definition Proventriculus (cardia) of the embryo or larva.
Also Known As "embryonic/larval cardia" ; "larval proventriculus"
Comment This structure is more correctly referred to as the 'cardia'. Strictly, proventriculus refers to a modification of the foregut, just anterior to the stomodeal valve, found in many insects. Drosophila has no such foregut modification (Miller, 1950). However, the term 'proventriculus' is the one most commonly used for this structure.
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Annotations
Records annotated with this term OR any of its CHILD TERMS
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN      54
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION      90
Insertions (FBti)  PHENOTYPE_MANIFEST_IN      12
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN       8
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 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 embryonic/larval proventriculus (all annotations which use CV term, excluding "NOT" statements)      54     99    102     25
     embryonic/larval proventriculus | embryonic stage      38       --       6      4
     embryonic/larval proventriculus | heat sensitive       1       --       --       1
     embryonic/larval proventriculus | larval stage       3       --       --       3
     embryonic/larval proventriculus | P-stage       1       --       --       --
     embryonic/larval proventriculus | prepupal stage       1       --       --       --
     embryonic/larval proventriculus | third instar larval stage       2       --       1       --
Spanning Tree (Parents/Children)
Only view relationship:
multi-tissue structure
 |__proventriculus_______
embryonic/larval gut     |
 |__larval caeca region__|
gut section              |
 |__proventriculus_______|
 |__larval caeca region__|
                         embryonic/larval proventriculus  293 rec.
                          |__embryonic/larval cardial valve
                          |__embryonic/larval peritrophic membrane 1 rec.
                          |__embryonic/larval proventriculus inner layer
                          |__embryonic/larval proventriculus intermediate layer 1 rec.
                          |   |__alveolar cell
                          |__embryonic/larval proventriculus outer layer 12 rec.
                          |   |__larval secretory cell of the proventriculus
                          |__peritrophic mill
                          |__somatic cell of embryonic/larval proventriculus
                              |__alveolar cell
                              |__embryonic/larval proventricular muscle cell
                              |__larval secretory cell of the proventriculus
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Is a proventriculus
Develops from embryonic proventriculus
Part of larval caeca region
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Synonyms
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