Temporal and Infratemporal Regions

Question 1

what are the superior and posterior borders of the temporal fossa

Answer 1

superior and inferior temporal lines

Question 2

what is the anterior border of the temporal fossa

Answer 2

frontal process of zygomatic bone and zygomatic process of frontal bone

Question 3

what is the inferior border of temporal fossa

Answer 3

infratemporal crest deep to zygomatic arch

Question 4

what is the floor of the temporal fossa

Answer 4

frontal, parietal, temporal and greater wing of sphenoid bone, includes pterion

Question 5

where does the temporal fascia attach to

Answer 5

superior temporal line and inferiorly splits into 2 attaching to lateral and medial zygomatic arch

Question 6

what does the temporal fascia do

Answer 6

provide resistance to masseter muscle by sitting on opposite side of zygomatic arch

Question 7

what are the contents of the infratemporal fossa

Answer 7

inferior part of temporalis, lateral and medial pterygoids,
maxillary artery, pterygoid venous plexus,
mandibular, IAN, lingual, buccal, chorda tympani nerves and otic ganglion

Question 8

what muscle does the maxillary artery pass through

Answer 8

between pterygoid and heads of lateral pterygoid

Question 9

what nerve does the chorda tympani come from

Answer 9

facial nerve

Question 10

what does the chorda tympani supply

Answer 10

taste to anterior 2/3rd of tongue

Question 11

where does the chorda tympani run

Answer 11

in the lingual nerve

Question 12

what is important to consider when injecting an IDB into the pterygomandibular space

Answer 12

pterygoid venous plexus - need to aspirate

Question 13

where is the otic ganglion

Answer 13

on medial side of mandibular nerve and posterior to pterygoids

Question 14

what nerves synapse in the otic ganglion

Answer 14

parasympathetic presynaptic fibres from glossopharyngeal nerve

Question 15

what nerve supplies secretomotor fibres to the parotid gland

Answer 15

auriculotemporal nerve

Question 16

what are the branches of the mandibular nerve to be aware of

Answer 16

auriculotemporal nerve, inferior alveolar nerve, lingual nerve, buccal nerve

Question 17

what does the auriculotemporal nerve encircle

Answer 17

middle meningeal artery

Question 18

what does the auriculotemporal nerve supply

Answer 18

auricle, temporal region, TMJ

Question 19

what fibres does the auriculotemporal nerve pass to the parotid gland from the otic ganglion

Answer 19

postsynaptic parasympathetic secretomotor fibres

Question 20

what does the IAN supply

Answer 20

mandibular teeth

Question 21

what does the mental nerve supply

Answer 21

skin of lower lip and chin, gingiva of mandibular incisors

Question 22

what does the nerve to mylohyoid supply

Answer 22

mylohyoid and anterior belly of digastric

Question 23

what does the lingual nerve supply

Answer 23

sensory to anterior 2/3rd of tongue, floor of mouth, lingual gingiva

Question 24

where does the lingual nerve and chorda tympani join

Answer 24

in infratemporal fossa

Question 25

what are the branches of the maxillary artery

Answer 25

mandibular, pterygoid, pterygopalatine

Question 26

what artery does the maxillary artery come from

Answer 26

external carotid artery

Question 27

where does the mandibular part of maxillary artery change to pterygoid part

Answer 27

at the lateral pterygoid

Question 28

where does the pterygoid part of the maxillary artery change to the pterygomaxillary part

Answer 28

once passing through the lateral pterygoid muscles

Question 29

what branch of the maxillary artery does the middle meningeal artery come from

Answer 29

mandibular part

Question 30

where does the middle meningeal artery enter the cranial cavity

Answer 30

foramen spinosum into middle cranial fossa

Question 31

what does the middle meningeal artery supply

Answer 31

dura and part of cranium

Question 32

what part of the maxillary artery does the IAN come off of

Answer 32

mandibular part

Question 33

what do the deep temporal arteries supply

Answer 33

temporalis

Question 34

what part of the maxillary artery do the deep temporal arteries come off of

Answer 34

pterygoid part

Question 35

what part of the maxillary artery does the masseteric artery come off of

Answer 35

pterygoid part

Question 36

what part of the maxillary artery does the buccal nerve come off of

Answer 36

pterygoid part

Question 37

what does the buccal nerve supply

Answer 37

buccinator of cheek and buccal oral mucosa

Question 38

what part of the maxillary artery does the superior alveolar arteries branch off of

Answer 38

pterygopalatine

Question 39

where is the pterygoid venous plexus

Answer 39

between temporalis and pterygoid muscles (pterygomandibular space)

Question 39

where is the pterygoid venous plexus

Answer 39

between temporalis and pterygoid muscles

Question 40

what does the pterygoid plexus anastomose with

Answer 40

facial vein and cavernous sinus (via emissary veins)

Question 41

what can the relationship of the facial vein, pterygoid plexus and cavernous sinus lead to

Answer 41

spread of infection (danger triangle)