FB2026_02 , released June 18, 2026

CV Term Report

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General Information

Term

larval excitatory interneuron eIN-5

ID (Ontology)

FBbt:00111734 (Fly Anatomy)

Definition

Larval excitatory interneuron (eIN) (Zwart et al., 2016) that is late-born in the NB7-1 Notch ON primary hemilineage (Mark et al., 2021). Its primary neurite enters the neuromere ventrolaterally and extends to the most dorsal region close to the midline (Zwart et al., 2016). It has relatively ventral postsynaptic sites and its more dorsal parts are mostly presynaptic (Zwart et al., 2016). It outputs onto the ipsilateral longitudinal motor neuron MN-LO1 (Zwart et al., 2016).[ FlyBase:FBrf0231611 FlyBase:FBrf0233076 FlyBase:FBrf0244727 FlyBase:FBrf0249021 ]

Also Known As

"eIN-5" ; "larval A03a4 neuron"

Comment

These neurons were identified in one EM reconstruction of the full CNS of a 6h old first instar larva. Neurotransmitter identified by antibody staining (Zwart et al., 2016).

Links to External Ontologies

VFB:FBbt_00111734

Annotations

Records annotated with this term OR any of its CHILD TERMS

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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	Constructs
larval excitatory interneuron eIN-5 (all annotations which use CV term, excluding "NOT" statements)

Spanning Tree (Parents/Children)

Notch ON hemilineage primary neuron
 |__NB7-1 Notch ON hemilineage primary neuron__
NB7-1 lineage primary neuron                   |
 |__lineage NB7-1 primary interneuron__________|
 |__NB7-1 Notch ON hemilineage primary neuron__|
larval premotor neuron                         |
 |__larval excitatory interneuron eIN__________|
larval interneuron                             |
 |__larval excitatory interneuron eIN__________|
primary interneuron                            |
 |__lineage NB7-1 primary interneuron__________|
 |__larval excitatory interneuron eIN__________|
larval cholinergic neuron                      |
 |__larval excitatory interneuron eIN__________|
                                               larval excitatory interneuron eIN-5  1 rec.
                                                |__larval abdominal 1 eIN-5 neuron
                                                |__larval abdominal 2 eIN-5 neuron
                                                |__larval abdominal 3 eIN-5 neuron
                                                |__larval abdominal 4 eIN-5 neuron
                                                |__larval abdominal 5 eIN-5 neuron

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	lineage NB7-1 primary interneuron NB7-1 Notch ON hemilineage primary neuron larval excitatory interneuron eIN
Part of
Synonyms & Secondary IDs
Synonyms
	"eIN-5" EXACT[ FlyBase:FBrf0233076 ] "larval A03a4 neuron" EXACT[ FlyBase:FBrf0244727 ] "larval abdominal excitatory interneuron eIN-5" NARROW
Secondary IDs

External Crossreferences & Linkouts
	VFB:FBbt_00111734