Pterygopalatine fossa

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left maxillary sinus - opened from the outside
left palate and upper jaw
both sides - from the front
Pterygopalatine fossa (outlined in blue) and pterygopalatine ganglion in dogs

The pterygopalatine fossa (winged palatine fossa ) is a bony-limited pit (Latin fossa ) on the skull .


It has the following limits:

  • Forward (anterior): Maxilla (Facies infratemporalis)
  • backwards (posterior) and upwards (cranial): Os sphenoidale (Processus pterygoideus)
  • to the middle (medial): Os palatinum (perpendicular plate)
  • downwards (caudal): it narrows to the palatine canal major
  • Lateral: pterygomaxillary fissure (passage of the maxillary artery, going from the infratemporal fossa to the pterygopalatine fossa)


The pterygopalatine fossa has connections to other parts of the skull:


The following anatomical structures are found in the pterygopalatine fossa: