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The glossopharyngeal nerve (gpn) at the jugular foramen. a Cadaveric section at the level of the skull base; view from below. The glossopharyngeal nerve exits the skull close to the inferior petrosal sinus (ips), the internal carotid artery (ica) and the jugular vein (jv). jb: jugular bulb. b Corresponding axial neck CT scan at the extracranial verge of the jugular foramen; right temporal bone, soft tissues window. The glossopharyngeal nerve is represented with a yellow dot
