Medical Definition of superior ganglion
1: the upper and smaller of the two sensory ganglia of the glossopharyngeal nerve that may be absent but when present is situated in a groove in which the nerve passes through the jugular foramen—called also jugular ganglion; compare inferior ganglion 1
2: the upper of the two ganglia of the vagus nerve that is situated at the point where it exits through the jugular foramen—called also jugular ganglion, superior vagal ganglion; compare inferior ganglion 2
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