composite part spanning multiple base regional parts of brain +
fasciculus of brain +
forebrain-midbrain boundary
insect adult brain +
insect embryonic brain +
insect embryonic/larval brain +
insect embryonic/larval protocerebrum +
insect supraesophageal ganglion +
The pre-oral neuropils of the brain located above and some of it below the esophagus, comprising three fused ganglia (protocerebrum, deutocerebrum, and tritocerebrum) in the head.