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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?

3cm Signup and view all the answers

Which bone is NOT part of the orbital walls?

Lacrimal bone Signup and view all the answers

Where are the supraorbital vessels and nerves located?

Medial corner supraorbital bone Signup and view all the answers

Which orbital region is the most exposed to possible injury?

Lateral orbital margin Signup and view all the answers

What is the function of the optic canal?

Provides communication between the orbital cavity and the middle cranial fossa Signup and view all the answers

What is the main cause of orbital cellulitis?

Infection involving the orbital connective tissue contents Signup and view all the answers

What are the functions of the paranasal margins?

Act as a resonator for the voice Signup and view all the answers