FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
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"
Comment This 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
Annotations
Records annotated with this term OR any of its CHILD TERMS
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN       1
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       9
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles  Genes Insertions Constructs
 adult subesophageal zone (all annotations which use CV term, excluding "NOT" statements)       1      5      3      9   4236
Spanning Tree (Parents/Children)
Only view relationship:
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
hide External Crossreferences & Linkouts
VFB:FBbt_00110639