Petrosquamous suture
| Petrosquamous suture | |
|---|---|
Temporal bone at birth. Inner aspect.
|
|
| File:Gray193.png
Base of the skull. Upper surface. (Temporal bone is in pink.)
|
|
| Details | |
| Latin | fissura petrosquamosa |
| Identifiers | |
| Dorlands /Elsevier |
12774728 |
| TA | Lua error in Module:Wikidata at line 744: attempt to index field 'wikibase' (a nil value). |
| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terms of bone
[[[d:Lua error in Module:Wikidata at line 863: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]]
|
|
The petrosquamous suture is a cranial suture between the petrous portion and the squama of the temporal bone that forms Koerner's septum. The petrous portion forms the medial component of the osseous margin, while the squama forms the lateral component. The anterolateral portion (squama) arises from the mesenchyme at 8 weeks of embryogenesis while the petromastoid portion develops later from a cartilaginous center at 6 months of fetal development.[1]
In certain people, it can contain an emissary vein, referred to as the petrosquamosal sinus. Being aware of this anatomic variant with preoperative CT scanning can be important to prevent bleeding in certain types of otolaryngolical surgeries. Some authors have theorized that a persistent venous sinus reflects an arrest in embryologic development.[1]
See also
References
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
External links
<templatestyles src="Asbox/styles.css"></templatestyles>
 |
This human musculoskeletal system article is a stub. You can help Wikipedia by expanding it. |
