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The foramen ovale and sphenoidal angle in man
Anatomy and Embryology
|January 1, 1980
Summary
The human foramen ovale is formed by membrane bone, not cartilage. This study details its development and relationship with surrounding structures in adult and embryonic specimens.
Area of Science:
- Anatomy
- Embryology
- Osteology
Background:
- The greater wing of the sphenoid bone's structure, particularly around the foramen ovale, is complex.
- Understanding its development is crucial for anatomical and clinical contexts.
Purpose of the Study:
- To describe the detailed structure of the greater wing of the sphenoid in the foramen ovale region.
- To elucidate the ossification and developmental origins of the foramen ovale and associated structures in humans.
Main Methods:
- Comparative anatomical study of adult human skulls.
- Analysis of partly ossified human embryonic specimens.
- Histological examination of sphenoid bone development.
Main Results:
- The foramen ovale is primarily enclosed by membrane bone, not cartilaginous structures.
- A medial process from the scaphoid fossa and a lateral tongue contribute to the foramen ovale's formation.
- The foramen of Vesalius marks the fusion site between membrane bone and the cartilaginous ala temporalis.
Conclusions:
- The greater wing of the sphenoid is largely composed of membrane bone, with specific contributions to the foramen ovale.
- Embryonic development reveals the origins of the foramen ovale and associated ligaments.
- Variations in foramina near the foramen ovale relate to vascular structures and bone development.
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