FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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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 ]
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  adult tracheal air sac
   |__head air sac
       |__frontal head air sac  9 rec.
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