<prompt> Post-styloid space of parapharyngeal space contains all, EXCEPT:Cranial nerve IXCranial nerve XIIParotidLymph nodes  <response>: The parapharyngeal space is a potential space, shaped like an inveed pyramid spanning the skull base to the hyoid. The boundaries of the space are separated by the styloid process and its associated fascial attachments into the prestyloid and poststyloid compaments. The contents of the prestyloid space are the parotid, fat, and lymph nodes. The poststyloid compament is composed of CNs IX to XII, the carotid space contents, cervical sympathetic chain, fat, and lymph nodes. Ref: Schwazs principle of Surgery 9th edition, chapter 18. 