FB2026_03 , released September 17, 2026
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Term mechanosensory neuron of femoral chordotonal organ ID (Ontology) FBbt:00048051 (Fly Anatomy)
Definition Mechanosensory neuron that innervates a scolopidium of a femoral chordotonal organ. Each scolopidium is innervated by two such neurons (Shanbhag et al., 1992; Kuan et al., 2020). There are around 135 per leg and they project through the leg nerve to the ventral nerve cord, with a small minority (3-4) continuing to the brain (Mamiya et al., 2018; Phelps et al., 2021). They are cholinergic proprioceptive sensory neurons (Mamiya et al., 2018; Agrawal et al., 2020).[ FlyBase:FBrf0056378 FlyBase:FBrf0231054 FlyBase:FBrf0237124 FlyBase:FBrf0240598 FlyBase:FBrf0247324 FlyBase:FBrf0247582 FlyBase:FBrf0247998 ]
Also Known As"FeCO" ; "FeCO neuron"
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VFB:FBbt_00048051
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 mechanosensory neuron of femoral chordotonal organ (all annotations which use CV term, excluding "NOT" statements)
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thoracic neuron
 |__mechanosensory neuron of leg chordotonal organ__
sensory neuron                                      |
 |__proprioceptive sensory neuron___________________|
cholinergic neuron                                  |
 |__adult cholinergic neuron________________________|
adult neuron                                        |
 |__adult cholinergic neuron________________________|
proprioceptive system neuron                        |
 |__proprioceptive sensory neuron___________________|
adult chordotonal neuron                            |
 |__mechanosensory neuron of leg chordotonal organ__|
                                                    mechanosensory neuron of femoral chordotonal organ  25 rec.
                                                     |__femoral chordotonal claw neuron 2 rec.
                                                     |   |__femoral chordotonal claw extension neuron(+)
                                                     |   |__femoral chordotonal claw flexion neuron(+)
                                                     |   |__mesothoracic femoral chordotonal claw neuron(+)
                                                     |   |__metathoracic femoral chordotonal claw neuron(+)
                                                     |   |__prothoracic femoral chordotonal claw neuron(+)
                                                     |__femoral chordotonal club neuron 2 rec.
                                                     |   |__mesothoracic femoral chordotonal club neuron
                                                     |   |__metathoracic femoral chordotonal club neuron
                                                     |   |__prothoracic femoral chordotonal club neuron
                                                     |__femoral chordotonal hook neuron 2 rec.
                                                     |   |__femoral chordotonal hook extension neuron(+)
                                                     |   |__femoral chordotonal hook flexion neuron(+)
                                                     |   |__mesothoracic femoral chordotonal hook neuron(+)
                                                     |   |__metathoracic femoral chordotonal hook neuron(+)
                                                     |   |__prothoracic femoral chordotonal hook neuron(+)
                                                     |__mechanosensory neuron of mesothoracic femoral chordotonal organ
                                                     |   |__mesothoracic femoral chordotonal claw neuron(+)
                                                     |   |__mesothoracic femoral chordotonal club neuron
                                                     |   |__mesothoracic femoral chordotonal hook neuron(+)
                                                     |__mechanosensory neuron of metathoracic femoral chordotonal organ
                                                     |   |__metathoracic femoral chordotonal claw neuron(+)
                                                     |   |__metathoracic femoral chordotonal club neuron
                                                     |   |__metathoracic femoral chordotonal hook neuron(+)
                                                     |__mechanosensory neuron of prothoracic femoral chordotonal organ
                                                         |__prothoracic femoral chordotonal claw neuron(+)
                                                         |__prothoracic femoral chordotonal club neuron
                                                         |__prothoracic femoral chordotonal hook neuron(+)
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Is a mechanosensory neuron of leg chordotonal organ
proprioceptive sensory neuron
adult cholinergic neuron
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VFB:FBbt_00048051