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General Information
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| Term |
period-positive median segmental interneuron |
ID (Ontology) |
FBbt:00111047 (Fly Anatomy) |
| Definition |
Glutamatergic, period-expressing, interneuron of the larval ventral nerve cord whose soma is located near the ventral midline of each segment (Kohsaka et al., 2014; Kohsaka et al., 2019). Its axon projects dorsally toward the dorsal midline, turns laterally and extends toward the lateral edge of the neuropil; it then makes a loop around the DL fascicle and projects back medially (Kohsaka et al., 2014; Kohsaka et al., 2019). Its terminals are mainly found in the dorsal neuropil region of the same segment as its soma (Kohsaka et al., 2014). There are around 10 of these interneurons in each hemineuromere (Kohsaka et al., 2014; Kohsaka et al., 2019), which develop from the NB2-1 neuroblast (Kohsaka et al., 2019; Mark et al., 2021).[ FlyBase:FBrf0226895 FlyBase:FBrf0242656 FlyBase:FBrf0249021 ] |
| Also Known As |
"looper neuron" ; "PMSI neuron" |
| Comment |
Kohsaka et al. (2014) and Kohsaka et al. (2019) claim there are only 10 PMSI neurons per hemineuromere (A02a-j). McNamee et al. (2016) - FBrf0232247 and Mark et al. (2021) seem to consider all lineage 2 neurons to be PMSIs (despite some lacking the characteristic dorsal loop). |
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Links to External Ontologies
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VFB:FBbt_00111047
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Annotations
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Records annotated with this term OR any of its CHILD TERMS
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Records annotated with this exact term (annotations to child terms are NOT included)
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No relevant records available
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Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
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| Full annotation statements | Relevant FlyBase reports |
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| Constructs |
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period-positive median segmental interneuron (all annotations which use CV term, excluding "NOT" statements) | 3 |
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Relationships