FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term prothoracic segment ID (Ontology) FBbt:00000017 (Fly Anatomy)
Definition The first (most anterior) segment of the thorax.
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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Relevant FlyBase reports
 Alleles Genes Images Insertions Constructs
 prothoracic segment (all annotations which use CV term, excluding "NOT" statements)
     prothoracic segment | dorsal
      --       --       --       --
     prothoracic segment | ectopic
      --       --       --
     prothoracic segment | heat sensitive
      --       --       --
     prothoracic segment | maternal effect
      --       --       --       --
     prothoracic segment | pharate adult stage
      --       --       --       --
     prothoracic segment | ventral
      --       --       --       --
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segment__
thorax___|
         thoracic segment
          |__prothoracic segment  1465 rec.
              |__adult prothoracic segment 918 rec.
              |   |__adult cervical nerve 3 rec.
              |   |__adult chordotonal organ of prothoracic segment(+) 7 rec.
              |   |__adult dorsal prothoracic nerve 1 rec.
              |   |__adult external prothorax(+) 133 rec.
              |   |__adult prosternal nerve
              |   |__adult prothoracic accessory nerve 1 rec.
              |   |__adult prothoracic chordotonal nerve
              |   |__adult prothoracic leg nerve 2 rec.
              |   |__adult prothoracic neuromere(+) 24 rec.
              |   |__adult prothoracic segment anterior compartment
              |   |__adult prothoracic segment posterior compartment 1 rec.
              |   |__adult prothoracic sensillum(+) 257 rec.
              |   |__adult ventral prothoracic nerve 1 rec.
              |   |__neck(+) 10 rec.
              |   |__prothoracic leg(+) 762 rec.
              |   |__prothoracic phragma 2 rec.
              |   |__somatic muscle of prothorax(+) 15 rec.
              |__chordotonal organ of prothoracic segment 10 rec.
              |   |__adult chordotonal organ of prothoracic segment(+) 7 rec.
              |   |__prothoracic dorsal triscolopidial chordotonal organ dch3 1 rec.
              |   |__prothoracic lateral triscolopidial chordotonal organ lch3
              |   |__prothoracic ventral monoscolopidial chordotonal organ vch1
              |__embryonic prothoracic segment 149 rec.
              |   |__dorsal prothoracic disc primordium 2 rec.
              |   |__embryonic prothoracic neuromere 1 rec.
              |   |__ventral prothoracic disc primordium 2 rec.
              |__embryonic/larval anterior spiracle 100 rec.
              |   |__anterior spiracle retractor muscle(+) 2 rec.
              |   |__anterior spiracular gland 2 rec.
              |   |__anterior spiracular scar
              |   |__papilla of larval anterior spiracle 7 rec.
              |__larval prothoracic segment 315 rec.
              |   |__adepithelial cell of dorsal prothoracic disc 1 rec.
              |   |__adepithelial cell of prothoracic leg disc 2 rec.
              |   |__embryonic/larval prothoracic sensillum(+) 3 rec.
              |   |__humeral disc(+) 19 rec.
              |   |__hypodermal muscle of prothorax(+) 21 rec.
              |   |__integument of larval prothoracic segment
              |   |__larval prothoracic dorsal sensory cluster(+) 3 rec.
              |   |__larval prothoracic intersegmental nerve 12 rec.
              |   |__larval prothoracic lateral sensory cluster(+) 2 rec.
              |   |__larval prothoracic neuromere(+) 4 rec.
              |   |__larval prothoracic segmental nerve 5 rec.
              |   |__larval prothoracic ventral sensory cluster group(+) 3 rec.
              |   |__prothoracic dorsal trichome 7 rec.
              |   |__prothoracic leg disc(+) 51 rec.
              |   |__prothoracic ventral denticle belt 48 rec.
              |   |__T1 beard 149 rec.
              |__prothoracic nerve 26 rec.
              |   |__adult cervical nerve 3 rec.
              |   |__adult dorsal prothoracic nerve 1 rec.
              |   |__adult prosternal nerve
              |   |__adult prothoracic accessory nerve 1 rec.
              |   |__adult prothoracic chordotonal nerve
              |   |__adult prothoracic leg nerve 2 rec.
              |   |__adult ventral prothoracic nerve 1 rec.
              |   |__larval prothoracic intersegmental nerve 12 rec.
              |   |__larval prothoracic segmental nerve 5 rec.
              |__prothoracic neuroblast NB3-5 1 rec.
              |__prothoracic neuroblast NB5-2
              |__prothoracic neuroblast NB5-3
              |__prothoracic neuroblast NB7-2
              |__prothoracic neuromere 41 rec.
              |   |__adult prothoracic neuromere(+) 24 rec.
              |   |__embryonic prothoracic neuromere 1 rec.
              |   |__larval prothoracic neuromere(+) 4 rec.
              |__prothoracic pretarsus 14 rec.
              |   |__prothoracic auxilia
              |   |__prothoracic empodium
              |   |__prothoracic pulvillar membrane
              |   |__prothoracic pulvillus(+)
              |   |__prothoracic unguis(+) 11 rec.
              |   |__prothoracic unguitractor plate
              |   |__prothoracic ungulfus
              |__prothoracic segment anterior compartment 2 rec.
              |__prothoracic segment posterior compartment 2 rec.
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Is a thoracic segment
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Synonyms
  • "prothorax" RELATED
    "t1" RELATED
    "thoracic segment 1" RELATED
Secondary IDs
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UBERON:6000017