adult abdominal spiracle [FBbt_00004814]
A spiracle of the adult abdomen. There are 7 pairs of these, in segments A1-7, in the anterior region of the pleural membrane. Each has a rigid circular rim and the opening leads to a tubular atrium lined by inward projecting circular lamellae. Where the atrium joins the trachea, the passage is constricted by a deep fold in the anterior wall which can be closed by the action of an associated spiracular occlusor muscle (FBbt:00013334). (Whitten, 1980, Ferris, 1950)
adult abdominal spiracle
ID: FBbt_00004814
Adult Anatomy
A spiracle of the adult abdomen. There are 7 pairs of these, in segments A1-7, in the anterior region of the pleural membrane. Each has a rigid circular rim and the opening leads to a tubular atrium lined by inward projecting circular lamellae. Where the atrium joins the trachea, the passage is constricted by a deep fold in the anterior wall which can be closed by the action of an associated spiracular occlusor muscle (FBbt:00013334). (Whitten, 1980, Ferris, 1950)
Open in VFB 3D Browser →Classification
Relationships
- continuous with: adult abdominal spiracular tracheal branch
- is part of: adult abdominal segment, pleural membrane
Parts of adult abdominal spiracle (2 total)
| Thumbnail | Name | Tags |
|---|---|---|
| lever of abdominal spiracle | Adult, Anatomy | |
| peritreme of abdominal spiracle | Adult, Anatomy |
Subclasses of adult abdominal spiracle (7 total)
| Thumbnail | Name | Tags |
|---|---|---|
| adult abdominal spiracle 1 | Adult, Anatomy | |
| adult abdominal spiracle 2 | Adult, Anatomy | |
| adult abdominal spiracle 3 | Adult, Anatomy | |
| adult abdominal spiracle 6 | Adult, Anatomy | |
| adult abdominal spiracle 7 | Adult, Anatomy |
References
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