FB2026_03 , released September 17, 2026
CV Term Report
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Term giant fiber coupled neuron 4 ID (Ontology) FBbt:00049600 (Fly Anatomy)
Definition Neuron of the adult ventral nerve cord that is coupled to the giant fiber neuron (GF) via gap junctions (Kennedy and Broadie, 2018). There are four bilateral pairs of these neurons with their cell bodies in the dorsal lateroposterior corner of the prothoracic neuromere (T1) (Kennedy and Broadie, 2018). Its processes first project ventrally, then posteromedially, running to the inframedial bridge, where it connects with the GF (Kennedy and Broadie, 2018). It then reverses course, projecting back to just below its cell body, turns ventrally and travels toward the T1 anterolateral corner to terminate in long finger-like projections (Kennedy and Broadie, 2018). Its processes appear to innervate the leg neuropils (Kennedy and Broadie, 2018).[ FlyBase:FBrf0241174 ]
Also Known As"GFC4"
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VFB:FBbt_00049600
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thoracic neuron
 |__prothoracic neuron__
adult CNS neuron        |
 |__adult VNC neuron____|
                        giant fiber coupled neuron 4  1 rec.
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Is a prothoracic neuron
adult VNC neuron
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VFB:FBbt_00049600