FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term abdominal 8 ventral longitudinal muscle ID (Ontology) FBbt:00058769 (Fly Anatomy)
Definition Ventral longitudinal muscle of larval segment eight. There are four of these on each side (Campos-Ortega and Hartenstein, 1997). Along with the VA1 muscle, these follow a dorsoposterior course and insert at the base of posterior spiracle (Campos-Ortega and Hartenstein, 1997). Their contraction pulls the posterior spiracle inside (Campos-Ortega and Hartenstein, 1997).[ FlyBase:FBrf0089570 ]
Also Known As "A8 VL" ; "srm"
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somatic muscle
 |__posterior spiracle retractor muscle______
longitudinal muscle                          |
 |__ventral longitudinal muscle______________|
hypodermal muscle of larval abdomen          |
 |__hypodermal muscle of larval abdominal 8__|
larval internal muscle                       |
 |__ventral longitudinal muscle______________|
                                             abdominal 8 ventral longitudinal muscle  1 rec.
                                              |__abdominal 8 ventral longitudinal muscle 1
                                              |__abdominal 8 ventral longitudinal muscle 2
                                              |__abdominal 8 ventral longitudinal muscle 3
                                              |__abdominal 8 ventral longitudinal muscle 4
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Is a posterior spiracle retractor muscle
ventral longitudinal muscle
hypodermal muscle of larval abdominal 8
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