<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> The glossopharyngeal nerve, known as the ninth cranial nerve (CN IX), is a mixed nerve that carries afferent sensory and efferent motor information . It exits the brainstem out from the sides of the upper medulla, just rostral (closer to the nose) to the vagus nerve . The motor division of the glossopharyngeal nerve is derived from the basal plate of the embryonic medulla oblongata, while the sensory division originates from the cranial neural crest . </P> <P> From the anterior portion of the medulla oblongata, the glossopharyngeal nerve passes laterally across or below the flocculus, and leaves the skull through the central part of the jugular foramen . From the superior and inferior ganglia in jugular foramen, it has its own sheath of dura mater . The inferior ganglion on the inferior surface of petrous part of temporal is related with a triangular depression into which the aqueduct of cochlea opens . On the inferior side, the glossopharyngeal nerve is lateral and anterior to the vagus nerve and accessory nerve . </P>

Cranial nerve ix is also known as which of the following