FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

larval VUM interneuron

ID (Ontology)

FBbt:00110182 (Fly Anatomy)

Definition

Ventral unpaired interneuron that is located ventrally in the embryonic/larval ventral nerve cord midline, ventral to the VUM motorneurons. It is a GABAergic neuron. There are three of these cells per segment.[ FlyBase:FBrf0072659 FlyBase:FBrf0180108 FlyBase:FBrf0195284 ]

Also Known As

"iVUM" ; "ventral unpaired median interneuron" ; "Vi"

Comment

Neurotransmitter was assessed by the expression of the glutamic acid decarboxylase 1 (Gad1) and the putative GABA vesicular transporter VGAT (FBgn0033911) (Wheeler et al., 2006).

Links to External Ontologies

VFB:FBbt_00110182

Annotations

Records annotated with this term OR any of its CHILD TERMS

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Direct annotations: records annotated with this exact term (child terms are NOT included)

Data Class	Field	Direct annotations
Alleles (FBal)	PHENOTYPE_MANIFEST_IN
Insertions (FBti)	EXPRESSION_STAGE_TISSUE_POSITION
Insertions (FBti)	PHENOTYPE_MANIFEST_IN

Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records

Full annotation statements	Relevant FlyBase reports
Full annotation statements	Alleles	Genes	Insertions	Constructs
larval VUM interneuron (all annotations which use CV term, excluding "NOT" statements)
larval VUM interneuron \| embryonic stage 16		--		--

Spanning Tree (Parents/Children)

larval neuron
 |__larval GABAergic neuron____
larval central nervous system  |
 |__larval interneuron_________|
interneuron                    |
 |__larval interneuron_________|
 |__primary interneuron________|
GABAergic neuron               |
 |__larval GABAergic neuron____|
primary neuron                 |
 |__primary interneuron________|
larval CNS neuron              |
 |__larval interneuron_________|
larval ventral midline neuron  |
 |__larval VUM neuron__________|
                               larval VUM interneuron  41 rec.
                                |__larval mandibular VUM neuron 1 1 rec.
                                |__larval maxillary VUM neuron 1 3 rec.
                                |__VUM4 interneuron 16 rec.
                                |__VUM5 interneuron 12 rec.
                                |__VUM6 interneuron 14 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	larval VUM neuron larval interneuron primary interneuron larval GABAergic neuron
Part of
Synonyms & Secondary IDs
Synonyms
	"iVUM" EXACT[ FlyBase:FBrf0195284 FlyBase:FBrf0216654 ] "ventral unpaired median interneuron" EXACT[ FlyBase:FBrf0072659 ] "Vi" EXACT[ FlyBase:FBrf0180108 ]
Secondary IDs

External Crossreferences & Linkouts
	VFB:FBbt_00110182