FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term ostium ID (Ontology) FBbt:00003166 (Fly Anatomy)
Definition Hemolymph inflow tract of the dorsal vessel (Lehmacher et al., 2012). It is formed by a pair of ostial cells flanking a pore through which hemolymph enters the dorsal vessel (Lehmacher et al., 2012). The pore can be closed to prevent outflow during the systolic phase (Lehmacher et al., 2012). Ostia have identical morphology at the adult and larval stages (Lehmacher et al., 2012).[ FlyBase:FBrf0007735 FlyBase:FBrf0219200 ]
Also Known As "lateral ostial inflow tract" ; "lateral valve" ; "ostial valve" (for all, see Synonyms field below)
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Spanning Tree (Parents/Children)
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  multicellular structure
   |__cell cluster organ
       |__ostium  67 rec.
           |__adult ostium 27 rec.
           |   |__adult ostium 1 2 rec.
           |   |__adult ostium 2
           |   |__adult ostium 3
           |   |__adult ostium 4 2 rec.
           |__larval ostium 44 rec.
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Is a cell cluster organ
Part of dorsal vessel
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