FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term larval A1-7-innervating VO3 motor neuron ID (Ontology) FBbt:00110284 (Fly Anatomy)
Definition Motor neuron that develops from the neuroblast NB4-2 lineage. It innervates the internal ventral oblique muscle 3 of larval abdominal segments A1 to A7. Its dendritic arborization occupies the medial domain of the ventral nerve cord neuropil. It exits the ventral nerve cord via the anterior root of the intersegmental nerve, fasciculating with the ISNb nerve branch and innervates the VO3 muscle with type Ib boutons. These neurons (at least in A1 to A4) die during metamorphosis (Banerjee et al., 2016).[ FlyBase:FBrf0099344 FlyBase:FBrf0112030 FlyBase:FBrf0132289 FlyBase:FBrf0160715 FlyBase:FBrf0167986 FlyBase:FBrf0174847 FlyBase:FBrf0208790 FlyBase:FBrf0234013 ]
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VFB:FBbt_00110284
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embryonic/larval motor neuron
 |__abdominal segment motor neuron____________________
type Ib motor neuron                                  |
 |__larval VO3 motor neuron___________________________|
primary neuron                                        |
 |__NB4-2 lineage primary neuron______________________|
NB4-2 lineage neuron                                  |
 |__NB4-2 lineage primary neuron______________________|
larval internal muscle motor neuron                   |
 |__larval VO3 motor neuron___________________________|
larval A1-7-innervating ISN motor neuron              |
 |__larval ventral A1-7-innervating ISN motor neuron__|
                                                      larval A1-7-innervating VO3 motor neuron
                                                       |__larval VO3 motor neuron of abdominal 1 neuromere
                                                       |__larval VO3 motor neuron of abdominal 2 neuromere
                                                       |__larval VO3 motor neuron of abdominal 3 neuromere
                                                       |__larval VO3 motor neuron of abdominal 4 neuromere
                                                       |__larval VO3 motor neuron of abdominal 5 neuromere
                                                       |__larval VO3 motor neuron of abdominal 6 neuromere
                                                       |__larval VO3 motor neuron of metathoracic neuromere
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Is a abdominal segment motor neuron
NB4-2 lineage primary neuron
larval ventral A1-7-innervating ISN motor neuron
larval VO3 motor neuron
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VFB:FBbt_00110284