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[Embryology of the sphenoid bone]
1Laboratoire d'Histologie et Embryologie et UMR CNRS 7000, Faculté de Médecine Pitié-Salpêtrière et Université Paris 6, 105 boulevard de l'Hôpital, 75634 Paris Cedex 13, France. catala@ext.jussieu.fr
Journal of Neuroradiology = Journal De Neuroradiologie
|October 21, 2003
Summary
The sphenoid bone forms from distinct embryonic origins, with different genetic controls influencing its development. This complex embryology contributes to various developmental diseases affecting the skull base.
Area of Science:
- Developmental biology
- Craniofacial anatomy
- Embryology
Context:
- The sphenoid bone's complex structure arises from multiple embryonic origins.
- Mammalian sphenoid bone development involves components from cephalic mesoderm and neural crest cells.
- Distinct genetic regulation governs the development of different sphenoid bone components.
Purpose:
- To elucidate the complex embryological origins and developmental heterogeneity of the mammalian sphenoid bone.
- To highlight the distinct cellular origins (cephalic mesoderm vs. neural crest) of sphenoid bone components.
- To underscore the differential genetic control influencing sphenoid bone development.
Summary:
- The sphenoid bone is embryologically complex, formed by distinct primordia with different origins.
- Orbitosphenoid and basi-post-sphenoid derive from cephalic mesoderm; alisphenoid and basi-pre-sphenoid originate from neural crest cells.
- Differential genetic control over these components increases sphenoid bone developmental heterogeneity.
Impact:
- Understanding sphenoid bone development is crucial for studying associated congenital anomalies.
- This research provides insights into the etiology of developmental diseases linked to the sphenoid bone.
- Knowledge of sphenoid bone embryology aids in diagnosing and managing conditions like chordomas and trans-sphenoidal encephaloceles.