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| Term | adult thermosensory neuron Ir21a VP1l | ID (Ontology) | FBbt:00111336 (Fly Anatomy) |
| Definition | Thermosensory receptor neuron that expresses the Ionotropic receptor (Ir) 21a and innervates antennal lobe glomerulus VP1l (Marin et al., 2020; Alpert et al., 2020). It has its sensory dendrite in chamber I of the sacculus and it responds to temperature drops below 25 degrees celsius (Marin et al., 2020; Alpert et al., 2020). It develops from an Naa precursor (Benton et al., 2025). There are around 6-8 of these cells per hemisphere (Marin et al., 2020) and they are unilateral (Schlegel et al., 2021).[ FlyBase:FBrf0215822 FlyBase:FBrf0246007 FlyBase:FBrf0246456 FlyBase:FBrf0249560 FlyBase:FBrf0262710 ] | ||
| Also Known As | "HRN_VP1l" ; "ionotropic receptor neuron Ir21a" ; "Ir21a" (for all, see Synonyms field below) | ||
| Comment | Ir21a neuron of sacculus in original reference was speculatively assigned to sacculus chamber III and VP3 (Silbering et al., 2011). Later found to be chamber I and VP1l (Marin et al., 2020 and refs therein). Assigned to 'cold glomerulus' in Alpert et al. (2020) - FBrf0246007, but projections in AL look like VP1l projections shown in Marin et al. (2020). | ||
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| VFB:FBbt_00111336 | |||
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sensory neuron |__external sense organ sensory neuron_______ sensory organ cell | |__external sense organ sensory neuron_______| thermosensory neuron | |__adult thermosensory neuron________________| adult antennal lobe receptor neuron | |__unilateral antennal lobe receptor neuron__| adult sensory neuron | |__adult thermosensory neuron________________| PNS neuron | |__external sense organ sensory neuron_______| adult thermosensory neuron Ir21a VP1l |
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adult thermosensory neuron unilateral antennal lobe receptor neuron external sense organ sensory neuron |
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| Develops from | antennal olfactory receptor neuron precursor Naa | ||
| Part of | adult peripheral nervous system | ||
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| VFB:FBbt_00111336 | |||