Infratemporal and Pterygopalatine Fossae PDF

INFRATEMPORAL AND PTERYGOPALATINE FOSSA Prof. Dr. Selda Önderoğlu Faculty of Medicine Dept.of Anatomy INFRATEMPORAL FOSSA: The region inferior To temporal Fossa& Deep to ramus of mandible Loading… Boundaries LATERAL; - Ramus of mandible, - Zygomatic arch ...

INFRATEMPORAL AND PTERYGOPALATINE FOSSA Prof. Dr. Selda Önderoğlu Faculty of Medicine Dept.of Anatomy INFRATEMPORAL FOSSA: The region inferior To temporal Fossa& Deep to ramus of mandible Loading… Boundaries LATERAL; - Ramus of mandible, - Zygomatic arch  Loading… MEDIAL; tuber maxilla, pterygomaxillary fissure, lateral pterygoid plate ANTERIOR - tuber maxilla, - buccinator m. - superior constrictor pharyngeal m. POSTERIOR - styloid process, - condylar process of mandible, -parotid gland  * FLOOR ( located sup.ly) Infratemporal crest greater wing of sphenoid bone APEX, Junction of the insertion medial pterygoid m. and pterygoid tuberosity of the ramus of mandible Infratemporal fossa communicates with; -Temporal fossa by zygomatic orifice Loading… With: Middle cranial fossa by foramen ovale, foramen spinosum With: Pterygopalatine fossa by pterygomaxillary fissure With:Orbital cavity by inferior orbital fissure Maxillary artery in the infratemporal fossa& passing through the pterygomaxillary Fissure To enter the pterygopalatine fossa CONTENTS of INFRATEMPORAL FOSSA: - Medial and lateral pterygoid muscles - Mandibular nerve and branches - Maxillary artery and branches - Maxillary vv. - Pterygoid venous plexus - Otic ganglion - Inferior part of the temporalis muscle Medial and lateral pterygoid mm. Mandibular nerve and branches Maxillary artery and branches are facial  Maxillary artery has 3 parts Mandibular part Pterygoid part ( the part located in the infratemporal fossa) Pterygopalatine part (the part located in the pterygopalatine fossa) Mandibular part of Accessory meningeal a. maxillary artery Middle meningeal a. Anterior tympanic a. Deep auricular a. Inferior alveolar a. Pterygoid part of maxillary Deep anterior, posterior temporal aa. artery Buccal artery Pterygoid aa. -Maxillary vv. -Pterygoid venous plexus Otic ganglion Inferior part of the temporalis m. PTERYGOPALATINE FOSSA Boundaries of pterygopalatine fossa: ANTERIOR boundary: - Posterior surface of maxilla, - Tuber maxilla POSTERIOR; Anterior aspect of pterygoid process Loading… LATERAL; Pterygomaxillary fissure MEDIAL:Lateral surface of perpendicular plate of palatine bone FLOOR; Body of sphenoid bone Greater wing Orbital part of palatine bone APEX; Opening of pterygopalatine Canal ( this canal connects the pterygopalatine Fos with the oral cavity) Pterygopalatine canal Pterygopalatine canal and the structures passing through it CONTENTS; - Pterygopalatine part of maxillary artery and brs. - Maxillary nerve and its branches - Pterygopalatine ganglion  Artery of pterygoid Sphenopalatine a. canal=vidii Pharyngeal a. Infraorbital a. Posterior superior alveolar a. Descending palatine a. Pterygopalatine part of maxillary artery  Maxillary nerve and its branches Pterygopalatine ganglion Maxillary artery is located in both The infratemporal&pterygopalatine fossa Pterygopalatine fossa communicates with; Infratemporal Fossa by :pterygomaxillary fissure With Nasal cavity by:sphenopalatine foramen Sphenopalatine foramen as seen from the nasal cavity Orbital cavity by inferior orbital fissure infratemporal fossa Remember that infratemporal fossa also communicates with orbital cavity through inferior orbital fissure  f.rotundum F. ovale F.spinosum Middle cranial fossa by foramen rotundum f.rotundum nerve maxillary &prevent  related to foramen lacerum through: pterygoid canal  Video links 1-https://www.youtube.com/watch?v=9taW-Th3ycc pterygopalatine fossa 2- https://sites.google.com/a/umich.edu/bluelink/curricula/first-year-dental- curriculum/session-9-infratemporal-fossa/learning-objectives 3- https://www.youtube.com/watch?v=QacrWgdmzdY pterygopalatine fossa 4- https://www.youtube.com/watch?v=xpe7nIC_B6Y infratemporal fossa 5- https://www.youtube.com/watch?v=y7oT4V8nOUU infratemporal fossa Acknowledgement: I thank you to all the scientists for their efforts of providing and sharing the information/knowledge used in this ppt. THANK YOU