FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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Term larval PDM descending neuron ID (Ontology) FBbt:00049518 (Fly Anatomy)
Definition Larval descending neuron with its soma in a posterior dorsal medial position in the brain (Tastekin et al., 2018). Its dendritic arborizations are found around the contralateral mushroom body pedunculus (Tastekin et al., 2018). It descends on the contralateral side and has large axonal varicosities in the subesophageal zone and the thoracic neuromeres and an axon reaches the fourth abdominal neuromere (Tastekin et al., 2018). It receives olfactory input from a set of lateral horn interneurons and provides outputs to a set of interneurons in the SEZ (Tastekin et al., 2018). It is involved in reorientation maneuvers during chemotaxis (Tastekin et al., 2018). There is one of these neurons per hemisphere and it is cholinergic (Tastekin et al., 2018).[ FlyBase:FBrf0240828 ]
Also Known As "larval PDM-DN" ; "larval posterior dorsal medial descending neuron"
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VFB:FBbt_00049518
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 larval PDM descending neuron (all annotations which use CV term, excluding "NOT" statements)       1      2
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larval neuron
 |__larval lateral horn neuron_______
 |__larval cholinergic neuron________|
neuron                               |
 |__primary neuron___________________|
cholinergic neuron                   |
 |__larval cholinergic neuron________|
larval descending neuron             |
 |__larval descending neuron to VNC__|
                                     larval PDM descending neuron  3 rec.
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larval lateral horn neuron
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VFB:FBbt_00049518