part of overlaps innervates adult lateral antennal lobe tract outer antenno-cerebral tract oACT fly_anatomy.ontology outer antennocerebral tract VFB:FBbt_00003983 Two small tracts branch from the main lALT, where it intersects the commissure of the antennal mechanosensory and motor center and ventrolateral protocerebrum (VLP). One (l4ALT) turns dorsolaterally, ran parallel to the lALT and terminates in the central and posterior dorsomedial VLP; the other (l5ALT) turns ventrolaterally and arborizes in the posterior ventral part of the VLP. Some of the projection neurons that fasciculate with the lALT send collateral branches to the posterior lateral protocerebrum (PLP) via the lateral section of the posterior lateral fascicle (PLF) and to the ring neuropil via the superior section of the PLF (Tanaka et al., 2012). Tract that emerges from the posterior ventral part of the antennal lobe, at the horizontal level of the top of the V glomerulus (ventral root). It runs posteriorly, turns dorsolaterally and runs through the ventrolateral protocerebrum to project to the medial periphery of the lateral horn. It contains axons of antennal lobe projection neurons. FBbt:00003983 lALT lateral antennal lobe-protocerebral tract lAPT https://iiif.elifesciences.org/lax/44590%2Felife-44590-fig2-v2.tif/full/,1500/0/default.jpg adult lateral horn adult antennal lobe tract adult inferior fiber system adult cerebral ganglion