Structure and Boundaries of the Pterygopalatine Fossa - Anterior boundary: superomedial part of the infratemporal surface of maxilla - Posterior boundary: root of the pterygoid process and adjoining anterior surface of the greater wing of sphenoid bone - Medial boundary: perpendicular plate of the palatine bone and its orbital and sphenoidal processes - Lateral boundary: pterygomaxillary fissure - Inferior boundary: part of the floor formed by the pyramidal process of the palatine bone

Nerve Supply of the Pterygopalatine Fossa - The pterygopalatine fossa contains the second division of the trigeminal nerve - The nerve of the pterygoid canal is a combination of the greater petrosal nerve (preganglionic parasympathetic) and the deep petrosal nerve (postganglionic sympathetic) - Intraoral injection in this area can lead to block anaesthesia of the entire second division of the trigeminal nerve

Related Articles and Terminology - This article uses anatomical terminology - Pterygopalatine canal (disambiguation) - Fossa in the Human Body

Additional Images of the Pterygopalatine Fossa - Alveolar branches of superior maxillary nerve and pterygopalatine ganglion - The pterygopalatine ganglion and its branches - Pterygopalatine fossa in a dog - Pterygopalatine fossa

References and External Links - Illustrated Anatomy of the Head and Neck, Fehrenbach and Herring, Elsevier, 2012, page 69 - Osborn, Anne (March 1979). Radiology of the Pterygoid Plates and Pterygopalatine Fossa (PDF). American Journal of Roentgenology. 132 (3): 389–394. doi:10.2214/ajr.132.3.389. PMID106641. - Ryan, Stephanie (2011). Chapter 1. Anatomy for diagnostic imaging (Thirded.). Elsevier Ltd. p.35. ISBN9780702029714. - External link: Interactive at Columbia.edu