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Foramen rotundum

Recommended video: Sphenoid bone [20:16]
Structure and landmarks of the sphenoid bone.

The foramen rotundum is a circular opening in the base of the greater wing of the sphenoid bone, found posterior to the medial end of the superior orbital fissure. This foramen allows passage for the maxillary nerve, the second branch of the trigeminal nerve (CN V). 

The foramen rotundum runs an inferior and lateral course and connects the middle cranial fossa with the pterygopalatine fossa.

Terminology English: Foramen rotundum
Latin: Foramen rotundum
Location Greater wing of the sphenoid bone
Contents Maxillary nerve (CN V2)

Test your knowledge about the skull bones with this interactive quiz.

Learn about other openings and landmarks of the sphenoid bone in the following study unit:

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