FB2026_03 , released September 17, 2026
CV Term Report
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Term corpus cardiacum primordium ID (Ontology) FBbt:00001717 (Fly Anatomy)
Definition The corpora cardiaca precursor first appear during stage 10 as two pairs of head mesoderm cells between the roof of the stomodeum and the inner surface of the brain primordium that derive from the anterior lip of the ventral furrow. Between stages 11 and 15, these cells migrate posteriorly, gradually increasing in number. During stage 15, they fuse with the precursors of the corpus allatum from the gnathal mesoderm to form the ring gland.[ FlyBase:FBrf0179777 ]
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 corpus cardiacum primordium (all annotations which use CV term, excluding "NOT" statements)
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embryo
 |__dorsal closure embryo___________
developing embryonic structure      |
 |__ring gland primordium___________|
extended germ band embryo           |
 |__late extended germ band embryo__|
primordium                          |
 |__ring gland primordium___________|
                                    corpus cardiacum primordium  27 rec.
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Is a ring gland primordium
Part of late extended germ band embryo
dorsal closure embryo
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Synonyms
  • "corpus cardiacum placode" RELATED
    "embryonic corpus cardiacum" RELATED
    "P1 CC" RELATED
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