part of capable of sends synaptic output to region has sensory dendrite in adult labial sensory neuron labellum peripheral nervous system neuron adult gnathal ganglion adult gustatory receptor neuron gustatory receptor neuron of the labellum 2014-05-08T19:55:02Z VFB:FBbt_00110887 fly_anatomy.ontology FBbt:00110887 Gustatory receptor neuron that innervates the adult labellum. It projects to distinct regions in the subesophageal zone, which include the anterior maxillary, posterior maxillary and labellar sensory centers, via specific terminal branches. The projections of sugar- and bitter-sensitive neurons are segregated in the subesophageal zone: sugar-sensitive neuron projections (identified by the expression of Gr5a) are more lateral and anterior than the bitter-sensitive projections (identified by the expression of Gr66a), divided into 2 connected zones either side of the midline, with the projection pattern of bitter-sensitive neurons occupying the central region (Wang et al., 2004). Carbon-dioxide-sensitive neurons from the medial taste pegs (identified in E409-GAL4 and NP107-GAL4) terminate in the AMS1 zone (Miyazaki and Ito, 2010). Bitter-sensitive neurons (identified with Gr32a-, Gr66a- and NV4-GAL4) terminate in PMS1-3 zones. Subsets of Gr66a-GAL4 positive neurons terminated in specific subareas of these zones Water-sensitive neurons (identified with NP1017-GAL4) and sugar-sensitive neurons (identified with Gr5a-GAL4) terminate in PMS4-5 zones (Miyazaki and Ito, 2010). detection of chemical stimulus involved in sensory perception of taste