Infratemporal Fossa Flashcards Preview

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Flashcards in Infratemporal Fossa Deck (22):
1

boundaries of infratemporal fossa

below middle cranial fossa
behind body of the maxilla
lateral to lateral pterygoid plate of sphenoid bone

2

contents of infratemporal fossa

muscles of mastication
maxillary artery and vein
pterygoid plexus of veins
mandibular division of trigeminal nerve and its branches
otic ganglion
temporomandibular joint

3

muscles of mastication

masseter
temporalis
lateral pterygoid
medial pterygoid

4

innervation of muscles of mastication

mandibular division of trigeminal nerve

5

2 roots of which nerve encircle the middle meningeal artery

auriculotemporal nerve

6

auriculotemporal nerve provides sensory innervaiton to

skin on side of the head
external ear
external acoustic meatus
tympanic membrane
temporomandibular joint
parotid gland

7

what nerve provides general sensation to anterior 2/3 of tongue

lingual N (joined by chorda tympani for taste innervation)

8

what nerve provides sensory innervation to teeth and gums of lower jaw

inferior alveolar nerve

9

what pathway does inferior alveolar nerve take through mandible

enters through mandibular foramen, emerges through mental foramen as mental nerve

10

branch of inferior alveolar nerve

nerve to mylohyoid

11

where is otic ganglion located

just below foramen ovale
between mandibular div of trigeminal N and tensor veli palatini muscle

12

otic ganglion receives preganglionic parasympathetic fibers from what nerve

glossopharyngeal N via lesser petrosal N

13

where do postganglionic fibers go from otic ganglion

join with auriculotemporal N to innervate parotid gland

14

what type of joint is the temporomandibular joint

synovial, bicondylar

15

lateral ligament of TMJ joint

articular tubercle of temporal bone to neck of mandible
prevents excessive forward, backward, and lateral movement

16

stylomandibular ligament

styloid process of temporal bone to gonial angle of mandible
prevents excessive anterior movement of mandible

17

sphenomandibular ligament

spinous process of sphenoid bone to lingula of mandible
suspensory ligament when mouth is wide opened

18

muscles that depress mandible

lateral pterygoid (mainly)
digastric
geniohyoid
mylohyoid

19

muscles that elevate mandible

masseter
temporalis
medial pterygoid

20

muscles that protrude mandible

lateral and medial pterygoid

21

muscles that retract mandible

posterior fibers of temporalis

22

muscles that produce side-to-side motion of mandible

medial and lateral pterygoid