FB2026_03 , released September 17, 2026
CV Term Report
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Term larval A1-7-innervating DA1 motor neuron ID (Ontology) FBbt:00110220 (Fly Anatomy)
Definition Motor neuron that innervates the internal dorsal acute muscle 1 of larval abdominal segments A1 to A7. Its dendritic arborization occupies the lateral domain of the ventral nerve cord neuropil. It exits the ventral nerve cord via the anterior root of the intersegmental nerve and innervates the DA1 muscle with type Ib boutons (Landgraf et al., 1997; Hoang and Chiba, 2001). By embryonic stage 16, it has a short contralaterally projecting neurite extending into the posterior commissure.[ FlyBase:FBrf0099344 FlyBase:FBrf0112030 FlyBase:FBrf0132289 FlyBase:FBrf0160715 FlyBase:FBrf0167986 FlyBase:FBrf0174847 FlyBase:FBrf0208790 FlyBase:FBrf0228257 FlyBase:FBrf0231328 ]
Also Known As"A1-7 aCC motor neuron" ; "A1-7 aCC neuron" ; "A1-7 MN1-Ib" (for all, see Synonyms field below)
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VFB:FBbt_00110220
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 larval A1-7-innervating DA1 motor neuron (all annotations which use CV term, excluding "NOT" statements)
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embryonic/larval motor neuron
 |__abdominal segment motor neuron___________________
type Ib motor neuron                                 |
 |__larval DA1 motor neuron__________________________|
lineage NB1-1 primary motor neuron                   |
 |__larval DA1 motor neuron__________________________|
Notch OFF hemilineage primary neuron                 |
 |__larval DA1 motor neuron__________________________|
larval internal muscle motor neuron                  |
 |__larval DA1 motor neuron__________________________|
larval A1-7-innervating ISN motor neuron             |
 |__larval dorsal A1-7-innervating ISN motor neuron__|
                                                     larval A1-7-innervating DA1 motor neuron  4 rec.
                                                      |__larval DA1 motor neuron of abdominal 1 neuromere
                                                      |__larval DA1 motor neuron of abdominal 2 neuromere
                                                      |__larval DA1 motor neuron of abdominal 3 neuromere
                                                      |__larval DA1 motor neuron of abdominal 4 neuromere
                                                      |__larval DA1 motor neuron of abdominal 5 neuromere
                                                      |__larval DA1 motor neuron of abdominal 6 neuromere
                                                      |__larval DA1 motor neuron of metathoracic neuromere
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Is a larval DA1 motor neuron
abdominal segment motor neuron
larval dorsal A1-7-innervating ISN motor neuron
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VFB:FBbt_00110220