Pterygopalatine Fossa

Question 0

What is the medial boundary of the PP fossa?

Answer 0

Vertical plate of the palatine bone

Question 1

What is the anterior boundary of the PP fossa?

Answer 1

Posterior surface of the maxilla

Question 2

What is the posterior boundary of the PP fossa?

Answer 2

Pterygoid process of sphenoid bone

Question 3

What forms the roof of the PP fossa?

Answer 3

Greater wing of Sphenoid bone

Question 4

What is the lateral entrance to the PP fossa?

Answer 4

The pterygomaxillary fissure

Question 5

The pterygomaxillary fissure is the doorway through which the _____ ________ of the _______ artery enters the PP fossa from the ____________ fossa.

Answer 5

3rd part of the maxillary artery enters the PP fossa from the Infratemporal fossa.

Question 6

The foramen rotundum conducts what from where to where?

Answer 6

Maxillary nerve (V2) from middle cranial fossa to PP fossa

Question 7

The pterygoid canal conducts what from where to where?

Answer 7

Artery and nerve of pterygoid canal from base of skull just anterior to foramen lacerum to PP fossa.

Question 8

The pharyngeal canal conducts what from where to where?

Answer 8

Pharyngeal branch of Maxillary artery and pharyngeal branch of V2 (which innervates most of nasopharynx) from nasopharynx to posterior wall of PP fossa.

Question 9

The inferior orbital fissure conducts what from where to where?

Answer 9

Orbital branches of V2 (I.e. zygomatic and infraorbital nn.) from orbit to PP fossa and from the orbit to the infratemporal fossa

Question 10

The sphenopalatine foramen conducts what from where to where?

Answer 10

Sphenopalatine artery and the nasopalatine n. from PP fossa to lateral wall of nasal cavity

Question 11

The greater and lesser palatine foramina conduct what from where to where?

Answer 11

Greater and lesser palatine nerves and vessels from the PP fossa to the roof of the oral cavity

Question 12

The posterior superior alveolar foramen conducts what from where to where?

Answer 12

Posterior superior alveolar artery and nerve from Infratemporal fossa to bony wall of maxillary sinus into the superior dental arch to supply upper teeth.

Question 13

All branches of the 3rd part of the maxillary artery enter _______ _________.

Answer 13

Bony foramina

Question 14

What is the terminal branch of the maxillary artery’s pterygopalatine part?

Answer 14

Sphenopalatine artery

Question 15

What are the two neural components carried by the pterygoid canal?

Answer 15

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.

Question 16

The pterygopalatine ganglion is located in which fossa?

Answer 16

PP fossa, duh.

Question 18

The infraorbital canal travels through the _____ to open to the face via the _____ foramen.

Answer 18

maxilla; infraorbital foramen

Question 19

The infraorbital roof and canal are found in the ____ orbit and ____ to the maxillary sinus.

Answer 19

inferior; superior

Question 20

The descending palatine artery branches off the maxillary artery and continues through the _____, exits via _____, and distributes to _____.

Answer 20

palatine canal; exits via greater/lesser palatine foramen; distributes to the palate

Question 21

Branches from which arteries supply the upper teeth?

Answer 21

posterior superior, anterior, and middle alveolar arteries

Question 22

The descending palatine artery splits where and into what?

Answer 22

after exiting the palatine foramen; splits into greater and lesser palatine arteries

Question 23

The descending palatine artery anastamoses with the _____ at the _____.

Answer 23

nasopalatine artery; incisive foramen

Question 24

The maxillary nerve carries GSA to what?

Answer 24

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.

Question 25

Zygomaticofacial and zygomaticotemporal are GSA branches of what CN?

Answer 25

V2, maxillary

Question 26

The upper dental plexus supplies what?

Answer 26

upper teeth/gingiva