FB2026_03 , released September 17, 2026
CV Term Report
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Term larval A1-7-innervating LL1 motor neuron ID (Ontology) FBbt:00110235 (Fly Anatomy)
Definition Larval DO1 motor neuron that innervates a muscle of segments A1-7. Its dendritic arborization occupies the intermediate domain of the ventral nerve cord neuropil. It exits the ventral nerve cord via the anterior root of the intersegmental nerve and innervates the LL1 muscle with type Ib boutons (Landgraf et al., 1997; Hoang and Chiba, 2001). Its soma is found in the segment anterior to the muscle it innervates (Kohsaka et al., 2012).[ FlyBase:FBrf0099344 FlyBase:FBrf0112030 FlyBase:FBrf0132289 FlyBase:FBrf0160715 FlyBase:FBrf0167986 FlyBase:FBrf0174847 FlyBase:FBrf0208790 ]
Also Known As"A1-7 MN-LL1 neuron" ; "A1-7 MN4-Ib" ; "A1-7 U5 motor neuron"
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VFB:FBbt_00110235
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 Alleles Genes Constructs
 larval A1-7-innervating LL1 motor neuron (all annotations which use CV term, excluding "NOT" statements)
     larval A1-7-innervating LL1 motor neuron | larval stage
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U neuron
 |__larval LL1 motor neuron___________________________
embryonic/larval motor neuron                         |
 |__abdominal segment motor neuron____________________|
type Ib motor neuron                                  |
 |__larval LL1 motor neuron___________________________|
larval internal muscle motor neuron                   |
 |__larval LL1 motor neuron___________________________|
larval A1-7-innervating ISN motor neuron              |
 |__larval lateral A1-7-innervating ISN motor neuron__|
                                                      larval A1-7-innervating LL1 motor neuron  6 rec.
                                                       |__larval LL1 motor neuron of abdominal 1 neuromere
                                                       |__larval LL1 motor neuron of abdominal 2 neuromere
                                                       |__larval LL1 motor neuron of abdominal 3 neuromere
                                                       |__larval LL1 motor neuron of abdominal 4 neuromere
                                                       |__larval LL1 motor neuron of abdominal 5 neuromere
                                                       |__larval LL1 motor neuron of abdominal 6 neuromere
                                                       |__larval LL1 motor neuron of metathoracic neuromere
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Is a abdominal segment motor neuron
larval lateral A1-7-innervating ISN motor neuron
larval LL1 motor neuron
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VFB:FBbt_00110235