Bony Orbit & Paranasal Sinuses Quiz
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Questions and Answers

Which bone forms the superior orbital margin?

  • Sphenoid bone
  • Frontal bone (correct)
  • Maxillary bone
  • Zygomatic bone

What is the shape of the orbit?

  • Cylinder
  • Four-sided pyramid (correct)
  • Triangular prism
  • Cuboid

What are the four walls of the orbit?

  • Superior, inferior, medial, lateral
  • Roof, floor, medial, lateral (correct)
  • Anterior, posterior, superior, inferior
  • Frontal, maxillary, sphenoid, ethmoid

What are the dimensions of the average vertical diameter of the orbital margin?

<p>3cm (C)</p> Signup and view all the answers

Which bone is NOT part of the orbital walls?

<p>Lacrimal bone (D)</p> Signup and view all the answers

Where are the supraorbital vessels and nerves located?

<p>Medial corner supraorbital bone (A)</p> Signup and view all the answers

Which orbital region is the most exposed to possible injury?

<p>Lateral orbital margin (D)</p> Signup and view all the answers

What is the function of the optic canal?

<p>Provides communication between the orbital cavity and the middle cranial fossa (D)</p> Signup and view all the answers

What is the main cause of orbital cellulitis?

<p>Infection involving the orbital connective tissue contents (A)</p> Signup and view all the answers

What are the functions of the paranasal margins?

<p>Act as a resonator for the voice (A)</p> Signup and view all the answers

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