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Questions and Answers
Which bone forms the superior margin of the orbit?
Which bone forms the superior margin of the orbit?
- Zygomatic bone
- Maxilla
- Frontal bone (correct)
- Sphenoid bone
Which structure is found at the apex of the orbit?
Which structure is found at the apex of the orbit?
- Optic canal (correct)
- Frontal bone
- Inferior orbital fissure
- Lacrimal bone
Which bones contribute to the formation of the lateral margin of the orbit?
Which bones contribute to the formation of the lateral margin of the orbit?
- Maxilla and frontal bone
- Sphenoid bone and palatine bone
- Maxilla and zygomatic bone
- Zygomatic bone and frontal bone (correct)
What forms the medial margin of the orbit?
What forms the medial margin of the orbit?
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Which anatomical component is located inferior to the orbit?
Which anatomical component is located inferior to the orbit?
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Study Notes
The Orbit
- The orbit is a pyramidal cavity with its base anterior and its apex posteriorly.
Orbital Margins
- The orbital margin is formed: • Above by the frontal bone • Laterally by the processes of the frontal and zygomatic bones • Inferiorly by the zygomatic bone and the maxilla • Medially by the processes of the maxilla and the frontal bone
Anatomical Components of the Orbit
- Frontal bone: forms part of the orbital margin
- Ethmoid Bone: present in the orbit
- Optic Canal: present in the orbit
- Superior Orbital Fissure: present in the orbit
- Sphenoid Bone: present in the orbit
- Inferior Orbital Fissure: present in the orbit
- Maxilla: forms part of the orbital margin
- Palatine Bone: present in the orbit
- Zygomatic Bone: forms part of the orbital margin
- Lacrimal Bone: present in the orbit
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