FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
Help Close All Open All
General Information
Term transmedullary neuron Tm29 ID (Ontology) FBbt:00049916 (Fly Anatomy)
Definition Transmedullary neuron that receives most of its input in around 5 columns of medulla layer M6, where it also has a small number of presynapses (Nern et al., 2025). It also has a small amount of arborization in the rest of M3-M8 (Nern et al., 2025). It crosses the second optic chiasm and has mixed pre- and post-synapses in around 3 columns of lobula layer 5B (Nern et al., 2025). It is glutamatergic (Davis et al., 2020). There are around 170-270 of these cells per hemisphere (Nern et al., 2025).[ FlyBase:FBrf0244935 FlyBase:FBrf0260545 FlyBase:FBrf0262545 ]
Also Known As "Tm29" ; "Tm5d"
Comment
Links to External Ontologies
VFB:FBbt_00049916
Annotations
Records annotated with this term OR any of its CHILD TERMS
Records annotated with this exact term (annotations to child terms are NOT included)
No relevant records available
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
   Constructs
 transmedullary neuron Tm29 (all annotations which use CV term, excluding "NOT" statements)       1      8      2
Spanning Tree (Parents/Children)
Only view relationship:
transmedullary neuron
 |__adult transmedullary CB3851 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______________|
                                            transmedullary neuron Tm29  11 rec.
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a Notch OFF hemilineage secondary neuron
adult glutamatergic neuron
adult transmedullary CB3851 neuron
Develops from immature transmedullary neuron Tm29
Part of
hide Synonyms & Secondary IDs
Synonyms
Secondary IDs
hide External Crossreferences & Linkouts
VFB:FBbt_00049916