FB2026_03 , released September 17, 2026
CV Term Report
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Term scutellar pulsatile organ ID (Ontology) FBbt:00003174 (Fly Anatomy)
Definition A small band of muscle fibers that spans the angle where the scutellum joins a ridge running down to the base of the wing. It functions in the pumping of hemolymph.[ FlyBase:FBrf0007734 FlyBase:FBrf0205292 FlyBase:FBrf0206946 ]
Also Known As"accessory wing circulatory organ" ; "paired scutellar pulsatile organ" ; "SPO" (for all, see Synonyms field below)
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 scutellar pulsatile organ (all annotations which use CV term, excluding "NOT" statements)
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mesothoracic segment
 |__adult mesothoracic segment__
adult thoracic segment          |
 |__adult mesothoracic segment__|
adult circulatory system        |
 |__pulsatile organ_____________|
multi-tissue structure          |
 |__pulsatile organ_____________|
                                scutellar pulsatile organ  7 rec.
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Is a pulsatile organ
Develops from scutellar pulsatile organ anlage
Part of adult mesothoracic segment
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