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Facial skeleton, orbit

Facial skeleton, orbit. Paul Cezanne, Still Life with Skull. Mark Kozsurek, M.D., Ph.D. assistant professor mark@kozsurek.hu. ED I., 28/09/2018. Supraorbital margin. NEUROCRANIUM. FACIAL SKELETON. External acustic meatus. + infratemporal fossa pterygopalatine fossa. Paired:

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Facial skeleton, orbit

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  1. Facial skeleton, orbit Paul Cezanne, Still Life with Skull Mark Kozsurek, M.D., Ph.D. assistant professor mark@kozsurek.hu ED I., 28/09/2018

  2. Supraorbital margin NEUROCRANIUM FACIAL SKELETON External acustic meatus

  3. + infratemporal fossa pterygopalatine fossa

  4. Paired: • zygomatic • maxilla • nasal • palatine • lacrimal • inferior nasal concha Unpaired: • sphenoid • ethmoid • vomer also contribute to the neurocranium!

  5. temporal fossa Zygomatic bone Surfaces: - orbital - lateral - temporal Processes: - frontal - maxillary - temporal Zygomatic canal: a Y-shaped channel with zygomaticoorbital, zygomaticfacial and zygomaticotemporal foramina

  6. Walls of the orbit:on the blackboard

  7. Walls of the orbit

  8. medial wall lateral wall inferior wall

  9. Superior: • orbital part of the frontal • lesser wing of the sphenoid Medial: • frontal process of the maxilla • lacrimal • orbital lamina of the ethmoid • body of the sphenoid Lateral: • orbital surface of the zygomatic • orbital surface of the greater wing of the sphenoid Inferior: • orbital surface of the maxilla • orbital process of the palatine

  10. Connections of the orbit

  11. 1. aditus orbitae 2. frontal notch 3 supraorbital foramen 4. zygomaticoorbital, zygomaticofacial and zygomaticotemporal foramina (zygomatic canal) 5. infraorbital sulcus, canal and foramen 6. nasolacrimal canal 7. ant. ethmoidal foramen and canal 8. post. ethmoidal foramen and canal 9. optic canal 10. sup. orbital fissure 11. inf. orbital fissure 3 2 8 7 9 1 10 6 11 4 5

  12. 7. ant. ethmoidal foramen and canal 8. post. ethmoidal foramen and canal 9. optic canal 10. superior orbital fissure 7 8 9 10

  13. 11. inferior orbital fissure 11 Pterygopalatine fossa (deep inside) Infratemporal fossa

  14. Structures within the orbit related to the lacrimal apparatus trochlear pit/spine fossa for lacrimal gland fossa for lacrimal sac

  15. Variations of the supraorbital margin

  16. supraorbital notch and frontal foramen nose supraorbital notch and frontal notch supraorbital notch only nose nose supraorbital foramen and frontal foramen nose

  17. coronal section through the orbit

  18. "Blow-out" fracture of the orbit The eye and socket is hit by a fast moving object like a ball or fist. Usually the inferior and medial walls are involved. This can cause the eye to look sunken in or even cause double vision.

  19. Thank you for your attention!

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