FB2026_03 , released September 17, 2026
CV Term Report
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Term adult heart chamber 1 ID (Ontology) FBbt:00003157 (Fly Anatomy)
Definition First, anterior-most chamber of the adult heart. It is funnel-shaped, widening to 120um anteriorly at its junction with the expanded end of the aorta, and is located in abdominal segments 1 and 2. This chamber develops during the last day of pupal stage.[ FlyBase:FBrf0007735 FlyBase:FBrf0187872 ]
Also Known As"conical chamber"
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 adult heart chamber 1 (all annotations which use CV term, excluding "NOT" statements)
     adult heart chamber 1 | adult stage
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adult heart______________
multicellular structure__|
                         adult heart chamber
                          |__adult heart chamber 1  18 rec.
                              |__adult ostium 1 2 rec.
                              |   |__adult ostial pore 1 2 rec.
                              |__adult pericardial fat mass 2 rec.
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