H&N III: Pterygopalatine fossa

Question 1

The n of the pterygoid canal contains what?

Answer 1

• Preganglionic parasympathetic axons from the greater petrosal n.
• Postganglionic sympathetic axons from the deep petrosal n.

Question 2

What are the branches that come off of the maxillary a?

Answer 2

-Sphenopalatine a
-Descending palatine a
o Greater palatine a
o Lesser palatine a
-Infraorbital a.

Question 3

Where does the sphenopalatine a course through?

Answer 3

courses through the ptergyopalatine fossa

the goes through the sphenopalatine foramen (to enter the nasal cavity)

Question 4

Where does the descending palatine a enter?

Answer 4

Greater palatine canal

Question 5

Where does the infraorbital a course through to exit the skull?

Answer 5

Passes the inferior orbital fissure

Exits through the infraorbital foramen

Question 6

Where does the maxiilary divison of the trigeminal n (V2) travel through?

Answer 6

Courses the foramen rotundum
to the inferior orbital fissure

Passes through the ptergyopalatine fossa and gives off ptergopalatine branches that will form the greater and lesser palatine nerves.

Question 7

Where is the location for synapse of preganglionic axons of the facial n.

Answer 7

Pterygopalatine ganglion

Question 8

Postganglionic axons that arise in the pterygopalatine ganglion distribute with what?

Answer 8

Distribute with branches of the maxillary division of the trigeminal n (V2)