FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term adult mesothoracic accessory nerve ID (Ontology) FBbt:00004062 (Fly Anatomy)
Definition A nerve that arises from the lateroposterior side of the mesothoracic neuromere at a point anterior to the root of the haltere nerve (Power, 1948; Court et al., 2020). It extends posteriorly and slightly dorsally and laterally, around the anterior wings of the mesofurca, before branching (Power, 1948; Court et al., 2020). One branch innervates the furcoentopleural muscles (muscles 59 and 60) and the other innervates laterally placed muscles, anterior to the halteres (Power, 1948; Court et al., 2020).[ FlyBase:FBrf0007196 FlyBase:FBrf0246815 ]
Also Known As "accessory mesothoracic nerve" ; "AcNv2" ; "MAC" (for all, see Synonyms field below)
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VFB:FBbt_00004062
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 adult mesothoracic accessory nerve (all annotations which use CV term, excluding "NOT" statements)       1
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  nerve
   |__mesothoracic nerve
       |__adult mesothoracic accessory nerve  1 rec.
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Is a mesothoracic nerve
Part of adult mesothoracic segment
adult peripheral nervous system
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VFB:FBbt_00004062