larval Jaam1 neuron [FBbt_00111656]
Interneuron of the larval ventral nerve cord (Heckscher et al., 2015) that is late-born in the NB5-2 Notch OFF primary hemilineage (Mark et al., 2021). The primary neurite extends into the neuropil forming one arbor that extends anteriorly and bifurcates mediolaterally (Heckscher et al., 2015). One neurite crosses the midline and forms a medial arbor that extends anteriorly, and a lateral arbor that extends both anteriorly and posteriorly; these three arbors overlap mainly with the dendrites of the A08e2 local neuron, to which it outputs (Heckscher et al., 2015). It receives input from the ipsilateral dorsal bipolar neuron (dbp) as well as substantial connections from Jaam2 and Jaam3 neurons (Heckscher et al., 2015). There is one of these neurons per hemineuromere (Heckscher et al., 2015). These neurons were identified in two EM reconstructions: one of the full CNS of a 6h old first instar larva, and another of abdominal segment 3 of a 12-24h old first instar larva. Only bilateral connections are reported. The number of identified input synapses in A1 was the following (number in brackets left/right): from Jaam2 (13/23), from Jaam3 (18/19), from dbp (8/15), from vbp/vdap (2/3). The number of identified output synapses was the following (number in brackets left/right): to A08e2 (8/9). It is still not known if the pattern of connections is the same in the other abdominal segments (Heckscher et al., 2015). HMD1 and A12p synonyms from catmaid.
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VFB Term Json
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