FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term embryonic frontal ganglion ID (Ontology) FBbt:00005668 (Fly Anatomy)
Definition A small paired ganglion of the embryonic stomatogastric nervous system attached to the anterior surface of the brain. It consists of approximately 25-30 neurons that form a U-shaped ganglion wedged between the anterior aspect of the brain hemispheres and the dorsal pharynx. The somata of the neurons surround a sparse neuropil domain and are enclosed in a glial sheath. Lateral projections from these neurons form the frontal connective. Medial projections that turn anteriorly on reaching the midline form the frontal nerve. Medial projections that turn posteriorly on reaching the midline form the recurrent nerve.[ FlyBase:FBrf0064803 FlyBase:FBrf0089570 ]
Comment The term parapharyngeal ganglion was previously used to designate the embryonic frontal ganglion (Campos-Ortega and Hartenstein, 1997).
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VFB:FBbt_00005668
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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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 embryonic frontal ganglion (all annotations which use CV term, excluding "NOT" statements)
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presumptive embryonic/larval central nervous system
 |__embryonic stomatogastric nervous system__
stomatogastric nervous system                |
 |__embryonic stomatogastric nervous system__|
 |__frontal ganglion_________________________|
ganglion                                     |
 |__frontal ganglion_________________________|
ectodermal derivative                        |
 |__anterior ectoderm derivative_____________|
                                             embryonic frontal ganglion  22 rec.
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Is a frontal ganglion
anterior ectoderm derivative
Develops from rostral vesicle of iSNSP
intermediate vesicle of iSNSP
tip stomatogastric nervous system precursor
delaminating stomatogastric nervous system precursor
frontal ganglion primordium
Part of embryonic stomatogastric nervous system
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VFB:FBbt_00005668