spiracular tracheal branch primordium [FBbt_00005589]
Region of a tracheal primordium that develops into an embryonic/larval spiracular branch. During stages 11 and 12, the invaginating tracheal pit forms an L shape. The arm of the L heading inwards from the surface forms the spiracular branch primordium. In all except the first and tenth tracheal metameres, the spiracular branch collapses, forming a solid cord.
spiracular tracheal branch primordium
ID: FBbt_00005589
Anatomy
Region of a tracheal primordium that develops into an embryonic/larval spiracular branch. During stages 11 and 12, the invaginating tracheal pit forms an L shape. The arm of the L heading inwards from the surface forms the spiracular branch primordium. In all except the first and tenth tracheal metameres, the spiracular branch collapses, forming a solid cord.
Open in VFB 3D Browser →Relationships
- develops into: embryonic/larval spiracular tracheal branch
- is part of: tracheal pit
Alternative Names
| Synonym | Scope | Reference |
|---|---|---|
| embryonic spiracular branch | exact synonym | |
| spiracular trachea | related synonym |
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