FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term embryonic/larval dorsal vessel ID (Ontology) FBbt:00001673 (Fly Anatomy)
Definition A contractile tube in the embryo/larva that extends from immediately behind the posterior commissure of T1 to the arthrodial membrane of A7, into which it inserts via two caudally directed muscles which connect to lateral apodemes in A8. Throughout its length, its lumen is enclosed by just two cardial cells. This single-cell thick layer of cardial cells is surrounded by a single-cell thick layer of pericardial cells, except in the posterior thorax. In this region, it is surrounded by lymph gland in the anterior thorax where it passes through the ring gland. The whole tube is attached to the anterior region of each abdominal segment boundary by alary muscles.[ FlyBase:FBrf0089570 ]
Also Known As "larval dorsal vessel"
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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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Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 embryonic/larval dorsal vessel (all annotations which use CV term, excluding "NOT" statements)
     embryonic/larval dorsal vessel | embryonic stage
      --       --
     embryonic/larval dorsal vessel | germline clone | maternal effect
      --       --       --
     embryonic/larval dorsal vessel | heat sensitive
      --       --       --
     embryonic/larval dorsal vessel | posterior
      --
      --
     embryonic/larval dorsal vessel | precursor
      --
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Vocabulary search
larva
 |__larval circulatory system__
circulatory system             |
 |__larval circulatory system__|
 |__dorsal vessel______________|
multicellular structure        |
 |__dorsal vessel______________|
                               embryonic/larval dorsal vessel  641 rec.
                                |__embryonic/larval aorta 28 rec.
                                |__embryonic/larval heart 250 rec.
                                |   |__embryonic/larval heart visceral muscle cell(+) 52 rec.
                                |__embryonic/larval intracardial valve 4 rec.
                                |   |__larval intracardial valve cell
                                |__larval cardial cell 74 rec.
                                |   |__larval contractile cardiomyocyte
                                |   |__larval intracardial valve cell
                                |   |__larval ostial cell 1 rec.
                                |__larval ostium 44 rec.
                                    |__larval ostial cell 1 rec.
                                    |__larval ostial pore(+) 43 rec.
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Is a dorsal vessel
Part of larval circulatory system
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Synonyms
  • "larval dorsal vessel" EXACT
Secondary IDs
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