Infratemporal and Pterygopalatine Fossa

Question 1

what are the general borders of the infratemporal fossa?

Answer 1

• deep to zygomatic arch
• maxilla
• mastoid process/ TMJ
• lateral pterygoid plate
• temporal and sphenoid bones
• pterygomaxillary fissure

Question 2

what does the foramen ovale transmit?

Answer 2

• CN V3

Question 3

what does the foramen spinosum transmit?

Answer 3

middle meningeal artery

Question 4

what does the petrotympanic fissure transmit?

Answer 4

chorda tympani

Question 5

what is the mandibular fossa?

Answer 5

articulation for TMJ

Question 6

what forms the posterior border of the ITF?

Answer 6

TMJ

Question 7

what movements does the TMJ make?

Answer 7

• protrusion
  
  • lateral pterygoid, medial pterygoid
• retraction
  
  • temporalis, masseter, geniohyoid, digastric
• elevation
  
  • temporalis, masseter, medial pterygoid
• depression
  
  • digastric, geniohyoid, mylohyoid

Question 8

what are 4 features of the TMJ?

Answer 8

• mandibular fossa
• articular disc
• mandibular condyle
• joint capsule

Question 9

which muscles of mastication attach to the TMJ?

Answer 9

• temporalis m.
• masseter m.
• medial pterygoid m.
• lateral pterygoid m.
• all innervated by CN V3

Question 10

blood primarily flows out of the ITF and into the ___ and ___ veins; can travel via ___ and ___

Answer 10

• facial
• maxillary
• ophthalmic
• cavernous sinus

Question 11

where is the pterygopalatine fossa?

Answer 11

medial to pterygomaxillary fissure

Question 12

what are the boundaries of the pterygopalatine fossa?

Answer 12

• maxilla
• pterygoid plate
• pterygomaxillary fissure
• sphenopalatine foramen
• orbit

Question 13

which branch coming off of the trigeminal ganglion travels through the pterygopalatine fossa?

Answer 13

• CN V2 via the foramen rotundum