Pterygopalatine Fossa Flashcards
Boundaries of the Pterygopalatine Fossa:
Posterior surface of the maxilla
Anterior
Boundaries of the Pterygopalatine Fossa:
Pterygoid processs
Posterior
Boundaries of the Pterygopalatine Fossa:
Greater wing of the sphenoid
Superior
Boundaries of the Pterygopalatine Fossa:
Perpendicular plate of the palatine bone
Medial
Openings into the Pterygopalatine Fossa:
Pterygomaxillary fissure
Lateral Wall
Openings into the Pterygopalatine Fossa:
Sphenopalatine foramen
Medial Wall
Openings into the Pterygopalatine Fossa:
Inferior orbital fissure
Anterior Wall
Openings into the Pterygopalatine Fossa:
Pterygoid canal
Posterior Wall
Openings into the Pterygopalatine Fossa:
Foramen rotundum
Ceiling
Openings into the Pterygopalatine Fossa:
The Pterygopalatine fossa has no _______. Just a passage to the greater and lesser palatine canals. ____ passes through, and the ganglion hangs from it.
Floor
V2
The pterygopalatine ganglion is a ____________ ganglion located in the pterygopalatine fossa. The ganglion receives 3 types of fibers:
____________
__________
___________
Parasympathetic
Sensory
Preganglionic parasympathetic fibers
Postganglionic sympathetic fibers
The ________ nerve and __________ nerve join to form the nerve of thee pterygoid canal.
Greater petrosal
Deep petrosal
Nerve of the ______ _______ terminates in the pterygopalatine ganglion.
Pterygoid canal
The ______ nerve (V2), exits the middle cranial fossa through the foramen rotundum. It contains only _____ fibers. It then enters the pterygopalatine fossa and travels in the upper part of the fossa. It enters the orbit via the inferior orbital fissure and changes name to the ________ nerve.
maxillary
Sensory
Infraorbital
Branches of V2:
Innervated dura mater in the middle cranial fossa
Intracranial Branch
Branches of V2:
Connect V2 with the pterygopalatine ganglion; contain mostly sensory fibers
Ganglionic branches
Branches of V2:
Divides into the zygomaticotemporal and zygomaticofacial nerves, supply skin over temporal region and cheek
Zygomatic nerve
Branches of V2:
Has a branch that contains postganglionic parasympathetic fibers destined for the lacrimal gland.
Zygomaticotemporal nerve
Branches of V2:
Supplies maxillary molar teeth and mucosa of maxillary sinus
Posterior superior alveolar nerve
Branches of V2: supplies maxillary premolars and mucosa of maxillary sinus
Middle superior alveolar nerve
Branches of V2:
Supplies maxillary incisors and canine teeth and mucosa of maxillary sinus
Anterior s superior alveolar nerve
Branches of the Pterygopalatine Part of the Maxillary Artery:
Divides into the greater and lesser palatine arteries to hard and soft palate
Descending palatine artery
Branches of the Pterygopalatine Part of the Maxillary Artery:
Passes through the palatovaginal canal with a branch of the pterygopalatine ganglion, supplies the mucosa of the nasopharynx and sphenoid sinus
Pharyngeal artery
Branches of the Pterygopalatine Part of the Maxillary Artery:
Supplies the walls and contents of the pterygoid canal and mucosa of the nasopharynx, auditory tube, and tympanic cavity
Artery of the pterygoid canal
Branches of the Pterygopalatine Part of the Maxillary Artery:
Enters the nasal cavity through the sphenopalatine foramen, it gives the following branches:
-posterolateral nasal branches, supplies posterior part of lateral wall of nasal cavity
-posterior septal branches, supplies mucosa of the posterior part of the nasal septum.
Sphenopalatine artery (or pterygopalatine artery - same thing)
