The vidan canal (blue) and foramen rotundum (red) are openings in the greater wing of the sphenoid that connect the pterygopalatine fossa to the middle cranial fossa.
The V2 nerve passes through the foramen rotundum, while the vidian nerve passes through the vidian canal. The vidian nerve is formed by greater superficial and deep petrosal nerves and contains sensory fibers from cranial nerve 7, which supply the soft palate.
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