Sphenoidal process of palatine bone
| Sphenoidal process of palatine bone | |
|---|---|
| File:Gray168.png Left palatine bone. Nasal aspect. Enlarged. | |
| File:Gray169.png Left palatine bone. Posterior aspect. Enlarged. | |
| Details | |
| Identifiers | |
| Latin | processus sphenoidalis |
| TA98 | Lua error in Module:Wikidata at line 746: 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 865: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]] | |
The sphenoidal process of palatine bone is a thin, superomedially directed plate of bone. It is smaller and more inferior compared to the orbital process of palatine bone.[1]
Anatomy
[edit | edit source]Surfaces
[edit | edit source]- The superior surface articulates with the root of the pterygoid process and the under surface of the sphenoidal concha, its medial border reaching as far as the ala of the vomer; it presents a groove which contributes to the formation of the pharyngeal canal.
- The medial surface is concave, and forms part of the lateral wall of the nasal cavity.
- The lateral surface is divided into an articular and a non-articular portion: the former is rough, for articulation with the medial pterygoid plate; the latter is smooth, and forms part of the pterygopalatine fossa.
Borders
[edit | edit source]- The anterior border forms the posterior boundary of the sphenopalatine notch.[1]
- The posterior border, serrated at the expense of the outer table,[citation needed] articulates with the vaginal process of the medial pterygoid plate of sphenoid bone.[1]
- The medial border articulates with ala of vomer.[1]
The orbital and sphenoidal processes are separated from one another by the sphenopalatine notch. Sometimes the two processes are united above, and form between them a complete foramen, or the notch may be crossed by one or more spicules of bone, giving rise to two or more foramina.
Additional images
[edit | edit source]-
Articulation of left palatine bone with maxilla.
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Base of skull. Inferior surface.
References
[edit | edit source]Public domain This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
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