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Anatomy of the Sphenoid Bone

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Questions and Answers

What is the primary reason the sphenoid bone is referred to as the 'wasp/butterfly' bone?

It has a uniquely smooth surface.

It resembles the wings of an insect. (correct)

It has an irregular and complex shape. (correct)

It is paired with other cranial bones.

Which foramen transmits the maxillary division of the trigeminal nerve?

Foramen Ovale

Foramen Rotundum (correct)

Foramen Magnum

Foramen Spinosum

What is one function of the Foramen Spinosum?

Houses the optical nerve.

Transmits the middle meningeal vessels. (correct)

Transmits the mandibular division of the trigeminal nerve.

Allows for the passage of the facial nerve.

Which statement about the sphenoid bone is true?

<p>It is the most complex bone in the skull.</p> Signup and view all the answers

What division does the Foramen Ovale transmit?

<p>Mandibular division of the trigeminal nerve</p> Signup and view all the answers

Study Notes

The Sphenoid Bone

Unpaired bone
Most complex bone
Irregular shape
Resembles a wasp/butterfly

Anatomical Structure

Composed of four main parts

Foramina and Bony Landmarks of the Sphenoid Bone

Foramen Rotundum: Transmits the maxillary division of the trigeminal nerve from the middle cranial fossa into the Pterygopalatine fossa
Foramen Ovale: Transmits the mandibular division of the trigeminal nerve from the middle cranial fossa to the Infratemporal fossa
Foramen Spinosum: Transmits the middle meningeal vessels and the meningeal branch of the mandibular division of the trigeminal nerve

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Description

This quiz explores the unique characteristics and anatomy of the sphenoid bone. Learn about its complex structure, main parts, and the significance of various foramina associated with it. Test your knowledge on this crucial component of the skull.