FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term mesothoracic tergotrochanter muscle motor neuron ID (Ontology) FBbt:00007406 (Fly Anatomy)
Definition Motor neuron that innervates the mesothoracic extracoxal trochanter depressor muscle 66 (tergotrochanteral muscle), ipsilaterally (Baird et al., 1993; Ehrhardt et al., 2023). Its large cell body is located laterally in the posterior ventral accessory mesothoracic neuromere (Baird et al., 1993; Phelan et al., 1996). Within the ventral nerve cord, it forms two main branches, one that extends medially, then anteromedially, reaching the midline and another that extends posteriorly (Baird et al., 1993). It is electrically synapsed to the giant fiber neuron, which it contacts via its medial branch, and it functions in jump response escape behavior (Baird et al., 1993; Phelan et al., 1996). Its axon exits the ventral nerve cord via the posterior dorsal mesothoracic nerve (Baird et al., 1993). In the male, it plays a role in pulse song generation (O'Sullivan et al., 2018).[ FlyBase:FBrf0058907 FlyBase:FBrf0085744 FlyBase:FBrf0240039 ]
Also Known As "TDTmn" ; "tergal depressor of trochanter muscle motor neuron" ; "tergotrochanteral muscle motor neuron" (for all, see Synonyms field below)
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VFB:FBbt_00007406
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Insertions (FBti)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 mesothoracic tergotrochanter muscle motor neuron (all annotations which use CV term, excluding "NOT" statements)
     mesothoracic tergotrochanter muscle motor neuron | adult stage
      --       --       --
     mesothoracic tergotrochanter muscle motor neuron | pupal stage
      --       --       --
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mesothoracic neuron
 |__mesothoracic leg muscle motor neuron______________________________
 |__mesothoracic extracoxal trochanter depressor muscle motor neuron__|
flight muscle motor neuron                                            |
 |__indirect flight muscle motor neuron_______________________________|
 |__flight control muscle motor neuron________________________________|
leg muscle motor neuron                                               |
 |__mesothoracic leg muscle motor neuron______________________________|
extracoxal trochanter depressor muscle motor neuron                   |
 |__mesothoracic extracoxal trochanter depressor muscle motor neuron__|
                                                                      mesothoracic tergotrochanter muscle motor neuron  18 rec.
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Is a indirect flight muscle motor neuron
mesothoracic leg muscle motor neuron
flight control muscle motor neuron
mesothoracic extracoxal trochanter depressor muscle motor neuron
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VFB:FBbt_00007406