FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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Term descending neuron of the posterior brain DNp09 ID (Ontology) FBbt:00047642 (Fly Anatomy)
Definition Descending neuron belonging to the DNp group, having a cell body on the posterior surface of the brain (Namiki et al., 2018). This neuron does not cross the midline and descends on the ipsilateral side of the cervical connective (Namiki et al., 2018). It has neurites in the inferior clamp, anterior ventrolateral protocerebrum, wedge, posterior ventrolateral protocerebrum, inferior posterior slope, superior posterior slope, gorget, gnathal ganglion, intermediate tectulum, abdominal neuromere, T1 leg neuropil, T2 leg neuropil and T3 leg neuropil (Namiki et al., 2018). It fasciculates with the intermediate tract of the dorsal cervical fascicle in the ventral nerve cord (Namiki et al., 2018). Its higher cerebral arborization is dendritic and its subesophageal and ventral nerve cord arborization is axonal (Bidaye et al., 2020). There is one of these cells per hemisphere (Namiki et al., 2018). It is cholinergic (Cheong et al., 2024). It receives strong input from lobula columnar LC9 neurons (Bidaye et al., 2020). It can initiate forwards walking, with an ipsilateral turning component and it involved in orientation behavior (Bidaye et al., 2020).[ FlyBase:FBrf0239335 FlyBase:FBrf0247235 ]
Also Known As "DNp09" ; "DNxl017" ; "P9 DN"
Comment Freezing behavior observed by Zacarias et al. (2018) - FBrf0240068 only seen in one of four genotypes by Bidaye et al. (2020).
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VFB:FBbt_00047642
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 descending neuron of the posterior brain DNp09 (all annotations which use CV term, excluding "NOT" statements)       1      2
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cholinergic neuron
 |__adult cholinergic neuron__________________
adult neuron                                  |
 |__adult cholinergic neuron__________________|
adult descending neuron                       |
 |__descending neuron of the posterior brain__|
adult CNS neuron                              |
 |__descending neuron of the posterior brain__|
                                              descending neuron of the posterior brain DNp09  3 rec.
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Is a descending neuron of the posterior brain
adult cholinergic neuron
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VFB:FBbt_00047642