Corpus: Foramen rotundum
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English:
Definition[Bearbeiten]
The foramen rotundum is a circular opening of the sphenoid bone (os sphenoidale) at the level of the sella turcica, which connects the pterygopalatine fossa with the middle cranial fossa (fossa cranii media).
Anatomy[Bearbeiten]
The foramen rotundum lies anteromedial to the foramen ovale. The average diameter of the foramen rotundum is about 3-4 mm. The second branch of the trigeminal nerve, the maxillary nerve, exits the cranial cavity through the foramen.
Memorandum[Bearbeiten]
A well-known nickname for the foramen rotundum and maxillary nerve is "Roter Max" (V2). Likewise "Ovale Mandel" for foramen ovale and mandibular nerve (V3).