FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term embryonic/larval heart ID (Ontology) FBbt:00001675 (Fly Anatomy)
Definition The embryonic/larval dorsal vessel from the middle of A4 to its posterior tip. It is broader and has a larger lumen then the aorta. It is separated from the aorta by a single intracardial valve (Lehmacher et al., 2012).[ FlyBase:FBrf0089570 FlyBase:FBrf0187872 FlyBase:FBrf0219200 ]
Also Known As "larval heart"
Comment The larval heart was initially described as being divided in three distinct chambers, with as many valves. However, a recent anatomical and histological study did not confirm this, and reported instead a single chamber, with a single valve separating it from the aorta (Lehmacher et al., 2012).
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Direct annotations: records annotated with this exact term (child terms are NOT included)
Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Insertions (FBti)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 embryonic/larval heart (all annotations which use CV term, excluding "NOT" statements)
     embryonic/larval heart | ectopic
      --       --
     embryonic/larval heart | embryonic stage
      --       --
     embryonic/larval heart | embryonic stage 14
      --       --       --
     embryonic/larval heart | embryonic stage 17 | third instar larval stage
      --
      --
     embryonic/larval heart | heat sensitive
      --       --       --
     embryonic/larval heart | larval stage
      --       --
     embryonic/larval heart | maternal effect
      --       --       --
     embryonic/larval heart | P-stage
      --       --
     embryonic/larval heart | third instar larval stage
      --
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Vocabulary search
larval circulatory system
 |__embryonic/larval dorsal vessel__
anatomical structure                |
 |__multicellular structure_________|
dorsal vessel                       |
 |__embryonic/larval dorsal vessel__|
                                    embryonic/larval heart  250 rec.
                                     |__embryonic/larval heart visceral muscle cell 52 rec.
                                         |__embryonic/larval alary muscle cell(+) 46 rec.
                                         |__larval contractile cardiomyocyte
                                         |__larval heart caudal fibers
                                         |__larval heart caudal ostial fibers
                                         |__larval heart dorsal fibers 1 rec.
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Is a multicellular structure
Develops from heart primordium
Part of embryonic/larval dorsal vessel
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Synonyms
  • "larval heart" EXACT
Secondary IDs
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