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 LO1 motor neuron ID (Ontology) FBbt:00110274 (Fly Anatomy)
Definition Motor neuron developing from neuroblast NB3-3 lineage that innervates the external lateral oblique muscle 1 of abdominal segments 1 to 7. The motor neuron exits the ventral nerve cord via the segmental nerve root nerve fasciculating with the SNa nerve branch and innervates the LO1 muscle with type Ib boutons.[ FlyBase:FBrf0099344 FlyBase:FBrf0112030 FlyBase:FBrf0132289 FlyBase:FBrf0160715 FlyBase:FBrf0167986 FlyBase:FBrf0174847 FlyBase:FBrf0208790 FlyBase:FBrf0233076 ]
Also Known As "A1-7 MN-LO1" ; "A1-7 MN5-Ib"
Comment Schmid et al. (1999) say MN5 matches the 'LO1 and/or SBM' motor neuron identified by Landgraf et al. (1997). Wang et al. (2022) - FBrf0254149 claim that the NB3-3 motor neuron innervates 23/24 (LT2/3) but do not show innervation.
Links to External Ontologies
VFB:FBbt_00110274
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larval abdominal segmental nerve neuron
 |__larval A1-7-innervating SN motor neuron__
embryonic/larval motor neuron                |
 |__abdominal segment motor neuron___________|
 |__larval A1-7-innervating SN motor neuron__|
type Ib motor neuron                         |
 |__larval LO1 motor neuron__________________|
primary neuron                               |
 |__NB3-3 lineage primary neuron_____________|
NB3-3 lineage neuron                         |
 |__NB3-3 lineage primary neuron_____________|
larval external muscle motor neuron          |
 |__larval LO1 motor neuron__________________|
                                             larval A1-7-innervating LO1 motor neuron
                                              |__larval LO1 motor neuron of abdominal 1 neuromere
                                              |__larval LO1 motor neuron of abdominal 2 neuromere
                                              |__larval LO1 motor neuron of abdominal 3 neuromere
                                              |__larval LO1 motor neuron of abdominal 4 neuromere
                                              |__larval LO1 motor neuron of abdominal 5 neuromere
                                              |__larval LO1 motor neuron of abdominal 6 neuromere
                                              |__larval LO1 motor neuron of abdominal 7 neuromere
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Is a abdominal segment motor neuron
NB3-3 lineage primary neuron
larval A1-7-innervating SN motor neuron
larval LO1 motor neuron
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VFB:FBbt_00110274