Pterygopalatine Fossa Flashcards
(26 cards)
What is the medial boundary of the PP fossa?
Vertical plate of the palatine bone
What is the anterior boundary of the PP fossa?
Posterior surface of the maxilla
What is the posterior boundary of the PP fossa?
Pterygoid process of sphenoid bone
What forms the roof of the PP fossa?
Greater wing of Sphenoid bone
What is the lateral entrance to the PP fossa?
The pterygomaxillary fissure
The pterygomaxillary fissure is the doorway through which the _____ ________ of the _______ artery enters the PP fossa from the ____________ fossa.
3rd part of the maxillary artery enters the PP fossa from the Infratemporal fossa.
The foramen rotundum conducts what from where to where?
Maxillary nerve (V2) from middle cranial fossa to PP fossa
The pterygoid canal conducts what from where to where?
Artery and nerve of pterygoid canal from base of skull just anterior to foramen lacerum to PP fossa.
The pharyngeal canal conducts what from where to where?
Pharyngeal branch of Maxillary artery and pharyngeal branch of V2 (which innervates most of nasopharynx) from nasopharynx to posterior wall of PP fossa.
The inferior orbital fissure conducts what from where to where?
Orbital branches of V2 (I.e. zygomatic and infraorbital nn.) from orbit to PP fossa and from the orbit to the infratemporal fossa
The sphenopalatine foramen conducts what from where to where?
Sphenopalatine artery and the nasopalatine n. from PP fossa to lateral wall of nasal cavity
The greater and lesser palatine foramina conduct what from where to where?
Greater and lesser palatine nerves and vessels from the PP fossa to the roof of the oral cavity
The posterior superior alveolar foramen conducts what from where to where?
Posterior superior alveolar artery and nerve from Infratemporal fossa to bony wall of maxillary sinus into the superior dental arch to supply upper teeth.
All branches of the 3rd part of the maxillary artery enter _______ _________.
Bony foramina
What is the terminal branch of the maxillary artery’s pterygopalatine part?
Sphenopalatine artery
What are the two neural components carried by the pterygoid canal?
Postganglionic sympathetics (deep petrosal n.) and preganglionic parasympathetics (greater petrosal n.- CN VII). Both go to the pterygopalatine ganglion. The tract of the two combined ANS components makes the nerve of the pterygoid canal.
The pterygopalatine ganglion is located in which fossa?
PP fossa, duh.
The infraorbital canal travels through the _____ to open to the face via the _____ foramen.
maxilla; infraorbital foramen
The infraorbital roof and canal are found in the ____ orbit and ____ to the maxillary sinus.
inferior; superior
The descending palatine artery branches off the maxillary artery and continues through the _____, exits via _____, and distributes to _____.
palatine canal; exits via greater/lesser palatine foramen; distributes to the palate
Branches from which arteries supply the upper teeth?
posterior superior, anterior, and middle alveolar arteries
The descending palatine artery splits where and into what?
after exiting the palatine foramen; splits into greater and lesser palatine arteries
The descending palatine artery anastamoses with the _____ at the _____.
nasopalatine artery; incisive foramen
The maxillary nerve carries GSA to what?
skin, teeth, mucosa of (upper teeth, gingiva, maxillary sinus, nasal cavity, parts of nasopharynx, hard/soft palates), skin of temple, orbit, nose, cheek and upper lip.
