Superior ganglion
Encyclopedia
The superior ganglion is situated in the upper part of the groove in which the glossopharyngeal nerve
is lodged during its passage through the jugular foramen
.
It is very small, and is usually regarded as a detached portion of the petrous ganglion
.
Glossopharyngeal nerve
The glossopharyngeal nerve is the ninth of twelve pairs of cranial nerves . It exits the brainstem out from the sides of the upper medulla, just rostral to the vagus nerve...
is lodged during its passage through the jugular foramen
Jugular foramen
The jugular foramen is a large aperture in the base of the skull. It is located behind the carotid canal and is formed in front by the petrous portion of the temporal, and behind by the occipital; it is generally larger on the right than on the left side....
.
It is very small, and is usually regarded as a detached portion of the petrous ganglion
Petrous ganglion
The inferior ganglion of the glossopharyngeal nerve is larger than the superior ganglion and is situated in a depression in the lower border of the petrous portion of the temporal bone....
.