part of continuous with larval abdominal segmental nerve larval segmental nerve branch SNa of A1-7 2008-12-05T08:55:02Z FBbt:00007328 Dorsally directed branch of segmental nerve of larval A1-7 that exits the ventral nerve cord through the segmental nerve root. It innervates the external lateral transverse and oblique muscles and carries axons of sensillum vc5 (also known as vp5) and lch1. fly_anatomy.ontology SNa VFB:FBbt_00007328 larval abdominal nerve larval segmental nerve root of A1-7