Pterygopalatine Fossa Flashcards
What are the boundaries of the PP fossa?
Posterior: sphenoid
Anterior: maxilla
Medial: palatine bone
Lateral: infratemporal fossa (pterygo(spheno) maxillary fissure)
What are ways of communication of the PP fossa?
Middle cranial fossa, nasal cavity, orbit, nasopharynx, oral cavity, infratemporal fossa
How do we communicate with the nasal cavity of the PP fossa?
Sphenopalatine foramen
What are other areas of PP fossa communication?
Inferior orbital fissure, pterygomaxillary fissure, foramen rotundum, pterygoid canal, palatovaginal canal, palatine canal
What fossa communicates with the PP fossa directly?
Middle cranial fossa
Where is the PPG fossa?
Posterior to the maxillary bone
What are the branches of the maxillary nerve?
Zygomaticofacial nerve, infraorbital nerve, zygomaticotemporal nerve, pharyngeal nerve, greater & lesser palatine nn., superior alveolar nn
What axons come from deep petrosal nerve?
GVE
What axons come from greater petrosal nerve?
GVE, GVA
Nerve of pterygoid canal consist of…
Post-ganglionic synaptic GVEs, pre-ganglionic GVEs, and parasympathetics, and sensation (GVA)
What hitchhikes on all branches of maxillary nerve?
GVE fibers
What is the final destination of the zygomaticotemporal nerve?
Postganglionic GVE fibers to the lacrimal gland
What ganglion is exhibiting dysfunction when eye is red, dry, and painful?
PPG
The nasal nerve supplies…
Medial and lateral walls of the nasal cavity via the posterior superior and inferior lateral nasal nerves, and the nasopalatine nerve
What does the nasopalatine nerve innervate?
Nasal cavity, then passes into oral cavity through the incisive canal
