FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term adult subesophageal zone ID (Ontology) FBbt:00110639 (Fly Anatomy)
Definition Neuropil mass below the esophagus in the adult brain. It encompasses the gnathal ganglion, the prow and the saddle.[ FlyBase:FBrf0224194 ]
Also Known As"SEZ"
CommentThis term refers to what used to be called subesophageal ganglion. The new name, together with supraesophageal zone, refer to the brain tissue below and above the esophagus and do not respect neuromere boundaries. The terms cerebral ganglia (CRG) and gnathal ganglia (GNG), denote the segmental neuromeres of the brain (the 3 rostral and 3 caudal, respectively) (Ito et al., 2014). Sterne et al. (2021) - FBrf0251280 define the SEZ as comprising GNG + TR.
Links to External Ontologies
VFB:FBbt_00110639
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 adult subesophageal zone (all annotations which use CV term, excluding "NOT" statements)
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Vocabulary search 
adult brain
 |__adult central brain__
central nervous system   |
 |__subesophageal zone___|
central brain            |
 |__adult central brain__|
multicellular structure  |
 |__subesophageal zone___|
                         adult subesophageal zone  6079 rec.
                          |__adult borboleta region
                          |   |__adult inner borboleta region
                          |   |__adult outer borboleta region
                          |   |__adult outer ventral borboleta region
                          |__adult gnathal ganglion 351 rec.
                          |   |__adult gnathal neuromere(+)
                          |   |__adult subesophageal lateral glial cell 2 rec.
                          |   |__cell body rind of adult gnathal ganglion(+) 1 rec.
                          |   |__inferior pharyngeal sensory center
                          |__adult motor region of subesophageal zone
                          |__adult sensory region of subesophageal zone 3964 rec.
                          |   |__adult anterior ventral sensory compartment(+)
                          |   |__adult central sensory compartment of subesophageal zone(+) 3962 rec.
                          |   |__antennal mechanosensory and motor center(+) 3962 rec.
                          |   |__antennal mechanosensory and motor center zone A(+) 14 rec.
                          |   |__antennal mechanosensory and motor center zone B(+) 7 rec.
                          |   |__antennal mechanosensory and motor center zone F(+)
                          |   |__anterior maxillary sensory center(+)
                          |   |__anterior maxillary sensory center zone 1
                          |   |__labial sensory center(+)
                          |   |__posterior maxillary sensory center(+)
                          |   |__posterior maxillary sensory center zone 4
                          |__cell body rind of adult subesophageal zone 1 rec.
                          |   |__cell body rind of adult gnathal ganglion(+) 1 rec.
                          |   |__cell body rind of adult saddle(+)
                          |__prow 433 rec.
                          |   |__superior pharyngeal sensory center
                          |__saddle 3997 rec.
                              |__antennal mechanosensory and motor center(+) 3962 rec.
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Is a subesophageal zone
Part of adult central brain
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Synonyms
  • "adult subesophageal ganglion" NARROW
    "adult suboesophageal ganglion" NARROW
    "SEG" NARROW
    "SEZ" EXACT BRAIN_NAME_ABV[ FlyBase:FBrf0224194 ]
    "SOG" NARROW
Secondary IDs
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VFB:FBbt_00110639