FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
Help Close All Open All
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).
Links to External Ontologies
VFB:FBbt_00005668
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      10
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       1
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN       3
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 Images Insertions Constructs
 embryonic frontal ganglion (all annotations which use CV term, excluding "NOT" statements)      10      7      1      1      3
Spanning Tree (Parents/Children)
Only view relationship: 
ganglion
 |__frontal ganglion______________
ectodermal derivative             |
 |__anterior ectoderm derivative__|
                                  embryonic frontal ganglion  22 rec.
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
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
hide Synonyms & Secondary IDs
Synonyms
Secondary IDs
hide External Crossreferences & Linkouts
VFB:FBbt_00005668