FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

larval PDM descending neuron

ID (Ontology)

FBbt:00049518 (Fly Anatomy)

Definition

Larval descending neuron with its soma in a posterior dorsal medial position in the brain (Tastekin et al., 2018). Its dendritic arborizations are found around the contralateral mushroom body pedunculus (Tastekin et al., 2018). It descends on the contralateral side and has large axonal varicosities in the subesophageal zone and the thoracic neuromeres and an axon reaches the fourth abdominal neuromere (Tastekin et al., 2018). It receives olfactory input from a set of lateral horn interneurons and provides outputs to a set of interneurons in the SEZ (Tastekin et al., 2018). It is involved in reorientation maneuvers during chemotaxis (Tastekin et al., 2018). There is one of these neurons per hemisphere and it is cholinergic (Tastekin et al., 2018).[ FlyBase:FBrf0240828 ]

Also Known As

"larval PDM-DN" ; "larval posterior dorsal medial descending neuron"

Comment

Links to External Ontologies

VFB:FBbt_00049518

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	Split System Combinations	Constructs
larval PDM descending neuron (all annotations which use CV term, excluding "NOT" statements)

Spanning Tree (Parents/Children)

larval neuron
 |__larval lateral horn neuron_______
 |__larval cholinergic neuron________|
neuron                               |
 |__primary neuron___________________|
cholinergic neuron                   |
 |__larval cholinergic neuron________|
larval descending neuron             |
 |__larval descending neuron to VNC__|
                                     larval PDM descending neuron  3 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	primary neuron larval descending neuron to VNC larval lateral horn neuron larval cholinergic neuron
Part of
Synonyms & Secondary IDs
Synonyms
	"larval PDM-DN" EXACT[ FlyBase:FBrf0240828 ] "larval posterior dorsal medial descending neuron" EXACT[ FlyBase:FBrf0240828 ]
Secondary IDs

External Crossreferences & Linkouts
	VFB:FBbt_00049518