FB2026_03 , released September 17, 2026
CV Term Report
Help Close All Open All
General Information
Term frontal head air sac ID (Ontology) FBbt:00003102 (Fly Anatomy)
Definition Largest tracheal air sac of the adult head, extending ventrally and anteriorly to the brain. It corresponds to the expansion of a ventral branch of the cervical trachea. It flanks the cibarium and extends forward and upward around the gnathal ganglion and brain to the level of the antennae and the ptilinal suture. A small dorsal branch extends into the antenna and forms the antennal air sac.[ FlyBase:FBrf0007735 FlyBase:FBrf0034081 ]
Comment
Links to External Ontologies
Annotations
Records annotated with this term OR any of its CHILD TERMS

Choose a record type to view annotations for this term and its child terms. Direct annotations and full annotation statements below also provide HitList buttons.

    • Results list data from multiple species. Choose a record type above to open its HitList.
Direct annotations: records annotated with this exact term (child terms are NOT included)
There are no annotations using this term.
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Genes Images
 frontal head air sac (all annotations which use CV term, excluding "NOT" statements)
Spanning Tree (Parents/Children)
Only view relationship:
Vocabulary search 
adult head______________
adult tracheal air sac__|
                        head air sac
                         |__frontal head air sac  9 rec.
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a head air sac
Part of
hide Synonyms & Secondary IDs
Synonyms
Secondary IDs
hide External Crossreferences & Linkouts