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Osteology

Roentgenogram, ethmoid bone, anteroposterior view

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Image #43-4
Bassett Image
Diagram Image
Legend Image
Osteology
Roentgenogram, ethmoid bone, anteroposterior view
The ethmoidal labyrinths (6) consist of numerous air cells separated by thin bony walls, and are connected at their superior margins by the cribriform plate (2). The superior surface of the cribriform plate lies in the anterior cranial fossa while its inferior surface forms the roof of the nasal fossae.
  1. Crista galli
  2. Crista galli
  3. Alar process
  4. Cribriform plate
  5. Sulci for anterior ethmoidal vessels and nerves
  6. Superior nasal concha (in depths of view)
  7. Cribriform plate
  8. Perpendicular plate (somewhat deflected)
  9. Lamina papyracea
  10. Uncinate process
  11. Uncinate process
  12. Ethmoidal labyrinth
  13. Middle nasal concha
  14. Ethmoidal bulla
  15. Ethmoidal labyrinth
  16. Middle nasal meatus
  17. Articular border for frontal spine
  18. Middle nasal concha
  19. Ethmoidal cells
  20. Perpendicular plate
  21. Middle nasal meatus