FB2026_03 , released September 17, 2026
CV Term Report
Help Close All Open All
General Information
Term transmedullary neuron Tm5c ID (Ontology) FBbt:00110074 (Fly Anatomy)
Definition Transmedullary Tm5 neuron that spans around eight medulla columns with lateral branches expanding out into the M1, M3 and M6 layers from a single vertical dendrite (Kind et al., 2021). It preferentially receives input from R8 (rather than R7) photoreceptor cells, and in most, but not all, cases these cells are selective for yellow (rather than pale) ommatidia (Kind et al., 2021). Its R8 input is mainly in layer M3 and it also receives input from the distal medullary amacrine neuron Dm8 in layer M6 (Karuppudurai et al., 2014). Its axon terminates near the boundary between lobula layers 5 and 6, with some cells having a branch in layer 4 (Kind et al., 2021). It provides input to the lobula intrinsic neuron Li4 via many synapses (Lin et al., 2016). It is a glutamatergic neuron (Gao et al., 2008; Karuppudurai et al., 2014).[ FlyBase:FBrf0049410 FlyBase:FBrf0206213 FlyBase:FBrf0224070 FlyBase:FBrf0230403 FlyBase:FBrf0252485 ]
Also Known As"Tm5c"
CommentThe neurotransmitter was assessed in cells labelled with a glutamate GAL4 driver P\{GawB\}vGlut[OK371] (FBti0076967) (Gao et al., 2008), RT-PCR and by immunohistochemistry (Karuppudurai et al., 2014). Connectivity inferred from GRASP experiments (Karuppudurai et al., 2014; Lin et al., 2016), from EM reconstructions (Kind et al., 2021) or from double-labeling EM (Lin et al., 2016).
Links to External Ontologies
VFB:FBbt_00110074
Annotations
Records annotated with this term OR any of its CHILD TERMS

Choose a record type to view annotations for this term and its child terms. Direct annotations and full annotation statements below also provide HitList buttons.

    • Results list data from multiple species. Choose a record type above to open its HitList.
Direct annotations: records annotated with this exact term (child terms are NOT included)
Data ClassFieldDirect annotations
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles Split System Combinations Genes  Insertions Constructs
 transmedullary neuron Tm5c (all annotations which use CV term, excluding "NOT" statements)
Spanning Tree (Parents/Children)
Only view relationship:
Vocabulary search 
transmedullary neuron
 |__transmedullary neuron Tm5_______________
 |__wide field transmedullary neuron________|
adult neuron                                |
 |__adult glutamatergic neuron______________|
secondary neuron                            |
 |__Notch OFF hemilineage secondary neuron__|
Notch OFF hemilineage neuron                |
 |__Notch OFF hemilineage secondary neuron__|
glutamatergic neuron                        |
 |__adult glutamatergic neuron______________|
optic lobe wide-field columnar neuron       |
 |__wide field transmedullary neuron________|
                                            transmedullary neuron Tm5c  26 rec.
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a transmedullary neuron Tm5
wide field transmedullary neuron
Notch OFF hemilineage secondary neuron
adult glutamatergic neuron
Develops from immature transmedullary neuron Tm5c
Part of
hide Synonyms & Secondary IDs
Synonyms
Secondary IDs
hide External Crossreferences & Linkouts
VFB:FBbt_00110074