receives synaptic input in region sends synaptic output to region larval visual projection interneuron larval third-order visual interneuron larval visual projection-local interneuron 2018-09-28T13:15:04Z VFB:FBbt_00047745 Larval third-order interneuron defined by prominent axonal projections beyond the optic neuropil, including in the lateral horn and mushroom body accessory calyx, and significant presynaptic termini within the proximal optic neuropil. It is glutamatergic. FBbt:00047745 VPLN fly_anatomy.ontology proximal larval optic neuropil larval mushroom body accessory calyx larval lateral horn neuron larval glutamatergic neuron mushroom body extrinsic neuron embryonic/larval lateral horn