FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

protocerebral bridge glomerulus

ID (Ontology)

FBbt:00003669 (Fly Anatomy)

Definition

One of the 18 slices that make up the adult protocerebral bridge, 9 on each side of the midline, numbered 1-9 from medial to lateral.[ FlyBase:FBrf0049409 FlyBase:FBrf0205148 FlyBase:FBrf0213955 FlyBase:FBrf0224194 FlyBase:FBrf0227801 ]

Also Known As

"protocerebral bridge slice"

Comment

The identification of the most medial slice (slice 1) by Wolff et al. (2015) meant that the domain that was previously called slice 1 corresponds in fact to slice 2. Author mentions of 8 slices in the protocerebral bridge indicates that they are using the old nomenclature. Each of the two neighboring slices (2-3, 4-5, 6-7, 8-9) are associated more closely because small-field columnar neurons innervate the fan-shaped body via the protocerebral bridge, and these neurons are generated by the same neuroblasts, forming four groups on each side of the midline, from lateral to medial: segment pair W, X, Y and Z (Boyan and Williams et al., 2011; Ito and Awasaki, 2008).

Links to External Ontologies

VFB:FBbt_00003669

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

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	Constructs
protocerebral bridge glomerulus (all annotations which use CV term, excluding "NOT" statements)

Spanning Tree (Parents/Children)

adult central complex
 |__protocerebral bridge_______
synaptic neuropil subdomain    |
 |__synaptic neuropil segment__|
synaptic neuropil domain       |
 |__protocerebral bridge_______|
                               protocerebral bridge glomerulus  3 rec.
                                |__protocerebral bridge glomerulus 1
                                |__protocerebral bridge glomerulus 2
                                |__protocerebral bridge glomerulus 3
                                |__protocerebral bridge glomerulus 4
                                |__protocerebral bridge glomerulus 5
                                |__protocerebral bridge glomerulus 6
                                |__protocerebral bridge glomerulus 7
                                |__protocerebral bridge glomerulus 8
                                |__protocerebral bridge glomerulus 9 1 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	synaptic neuropil segment
Part of	protocerebral bridge
Synonyms & Secondary IDs
Synonyms
	"protocerebral bridge slice" EXACT
Secondary IDs

External Crossreferences & Linkouts
	VFB:FBbt_00003669