<prompt> False about pterygopaltine fossa:-Communicates inferomedially with infra temporal fossaCommunicates with middle cranial fossa through vidian canalContains pterygopalatine ganglion and third pa of maxillary aeryForamen rotundum is located above the Vidian canal  <response>: The pterygopalatine fossa is an inveed teardrop shaped ,Space between bones on the lateral side of the skull immediately posterior to maxilla. Direction Passage Connection Posterior Foramen rotundum Pterygoid canal vidian Palatovaginal canal pharyngeal Middle cranial fossa Middle cranial fossa foramen lacerum Nasal cavity, nasopharynx. Anterior Inferior orbital fissure Orbit Medially Sphenopalatine foreman Nasal cavity Laterally Pterygomaxillary fissure Infratemporal fossa Inferiorly Greater palatine canal pterygopalatine Oral cavity, lesser palatine canals. Contents of pterygopalatine fossa: - 1. Third pa of maxillary aery and its branches which bear the same names as the branches of the pterygopalatine ganglia accompany all of them. 2. Maxillary nerve and its two branches, zygomatic posterior superior alveolar. 3. Pterygopalatine ganglion its numerous branches containing fibers of the maxillary nerve mixed with autonomic nerve. 