synapsed_via_type_Ib_bouton_to develops from expresses sends synaptic output to cell eve ganglion mother cell GMC1-1a larval DA1 motor neuron aCC motoneuron VFB:FBbt_00001447 MN1-Ib DA1 motor neuron fly_anatomy.ontology Motor neuron that is born from the first GMC to bud from neuroblast NB1-1 (GMC1-1a) in thoracic and abdominal segments and is part of the Notch OFF hemilineage (Skeath and Doe, 1998). It has a large round cell body that sits at the dorsal surface of the CNS, in the next anterior segment to the muscle it innervates, just posterior to the posterior commissure and longitudinal connective (Schmid et al., 1999; Zarin and Labrador, 2019). It innervates dorsal acute muscle 1 (DA1; muscle 1) (Landgraf et al., 1997). It expresses even-skipped (Manning et al., 2012). 1-1a1 Not present in MN neuromere (lack of NB1-1) or LB neuromere (apoptosis of precursor) or MX neuromere (precursor cell appears to differentiate into a different type) (Rickert et al., 2018 - FBrf0238045). Present in A8 and A9 (Birkholz et al., 2013 - FBrf0221210). MN-DA1 anterior corner cell aCC neuron FBbt:00001447 motor neuron type Ib motor neuron lineage NB1-1 primary motor neuron Notch OFF hemilineage primary neuron larval internal muscle motor neuron muscle cell of dorsal acute muscle 1