Lecture 5: infratemporal fossa and pterygopalatine fossa

Question 1

lateral boundary of the infratemporal fossa

Answer 1

rams of the mandible

Question 2

medial boundary of the infra temporal fossa

Answer 2

lateral pterygoid plate

Question 3

anterior boundary of the infratemporal fossa

Answer 3

posterior aspect of the maxilla

Question 4

posterior boundary of the infratemporal fossa

Answer 4

tympanic plate and mastoid and styloid processes of the temporal bone

Question 5

superior boundary of the infratemporal fossa

Answer 5

inferior (infratemporal) surface of the greater wing of the sphenoid bone

Question 6

inferior boundary of the infratemporal fossa

Answer 6

where the medial pterygoid muscle attaches to the mandible near its angle

Question 7

lateral access of the infratemporal fossa

Answer 7

ramus of the mandible: mandibular foramen (inferior alveolar nerve)

Question 8

medial access of the infratemporal fossa

Answer 8

lateral pterygoid plate: pterygomaxillary fissure (maxillary artery)

Question 9

anterior access of the infratemporal fossa

Answer 9

posterior aspect of the maxilla: alveolar foramen (posterior superior alveolar nerve)

Question 10

posterior access of the infratemporal fossa

Answer 10

tympanic plate and the mastoid and styloid processes of the temporal bone–> no direct access from posterior boundary

Question 11

superior access of the infratemporal fossa

Answer 11

inferior surface of the greater wind of the sphenoid bone

• foramen spinosusm (middle meningeal artery)
• foramen ovale (V3)
• pettotympanic fissure (chorda tympani)

Question 12

inferior access of the infratemporal fossa

Answer 12

where the medial pterygoid muscle attaches to the mandible near its angle–> no direct access from the inferior boundary

Question 13

contents in the infratemporal fossa

Answer 13

• inferior part of the temporalis muscle
• lateral and medial pterygoid muscle
• maxillary artery (1st and 2nd divisions)
• pterygoid venous plexus
• mandibular nerve and its branches
• otic ganglion
• chorda tympani (from the facial nerve) and lesser petrosal (from the glossopharyngeal nerve) join the mandibular nerve

Question 14

pterygoid venos plexus connects with the

Answer 14

• retromandibular vein via maxillary vein

- facial vein via deep facial vein

Question 15

lateral border of the pterygopalatine fossa

Answer 15

pterygomaxillary fissure

Question 16

anterior border of the pterygopalatine fossa

Answer 16

posterior surface of maxilla

Question 17

medial border of the pterygopalatine fossa

Answer 17

vertical plate of palatine bone

Question 18

posterior border of the pterygopalatine fossa

Answer 18

pterygoid process of sphenoid bone

Question 19

superior border of the pterygopalatine fossa

Answer 19

portion of greater wing of sphenoid bone

Question 20

inferior border of the pterygopalatine fossa

Answer 20

pyramidal process of palatine bone

Question 21

contents of the pterygopalatine fossa

Answer 21

• terminal part of the maxillary artery and the initial part of its branches
• maxillary nerve and branches
• nerve of the pterygoid canal
• pterygopalatine ganglion

Question 22

the pterygomaxillary fissure of the pterygopalatine fossa goes to the …

Answer 22

infratemporal fossa

Question 23

the inferior orbital fissure of the pterygopalatine fossa is ….goes to the …

Answer 23

• between sphenoid and maxillary

- to the orbit

Question 24

the sphenopalatine foramen of the pterygopalatine fossa is ….goes to the …

Answer 24

• in palatine bone

- to nasal cavity

Question 25

the palatovaginal canal of the pterygopalatine fossa is ....goes to the ...

Answer 25

- in sphenoid bone | - to nasopharynx

Question 26

the foramen rotundum of the pterygopalatine fossa is ....goes to the ...

Answer 26

- in sphenoid bone | - to middle cranial fossa

Question 27

the pterygoid canal of the pterygopalatine fossa is ....goes to the ...

Answer 27

- in sphenoid bone | - to middle cranial fossa

Question 28

the greater palatine canal of the pterygopalatine fossa is ....goes to the ...

Answer 28

- in palatine bone | - to oral cavity

Question 29

7 gateways of the pterygopalatine fossa

Answer 29

- pterygomaxillary fissure - inferior orbital fissure - sphenopalatine foramen - palatovaginal canal - foramen rotundum - pterygoid canal - greater palatine canal