fasciculates with synapsed_via_type_Ib_bouton_to sends synaptic output to cell A1-7 segment border muscle cell larval abdominal segmental nerve abdominal segment motor neuron motor neuron larval segmental nerve branch SNa of A1-7 NB2-4 lineage primary neuron larval segmental nerve root of A1-7 larval A1-7-innervating SN motor neuron larval SBM motor neuron larval A1-7-innervating SBM motor neuron 2013-01-18T02:47:33Z VFB:FBbt_00110276 fly_anatomy.ontology A1-7 NAD Motor neuron developing from the neuroblast NB2-4 lineage that innervates the external segment border muscle of abdominal segments 1 to 7 (Schmid et al., 1999). It exits the ventral nerve cord via the segmental nerve SNa branch and innervates the SBM muscle of the same segment with type Ib boutons (Hoang and Chiba, 2001; Zarin and Labrador, 2019). FBbt:00110276 A1-7 MN8-Ib A1-7 MN-SBM