Infratemporal Region Flashcards Preview

Anatomy > Infratemporal Region > Flashcards

Flashcards in Infratemporal Region Deck (42):
1

What vascurlature passesthru the petrotympanic fissure?

Anterior tympanic artery and chorda tympani nerve

2

Contents if the infratemporal fossa

Medial/Lateral pterygoid muscles, maxillary artery, pterygoid venous plexus, mandibular nerve, chorda tympani, otic ganglion

3

By what means does the maxiallry artery leave the infratemporal fossa?

Passes thru the pterygomandibular fissure

4

Branches from part 1 of maxillary artery

Middle meningeal, inferior alveolar, deep auricular, anterior tympanic, accessory meningeal

5

What branch splits the roots of the auricularotemporal nerve?

middle meningeal

6

What foramen does the middle meningeal artery use to enter the skull?

foramen spinosum

7

What is the inferior alveolar artery's path?

enters mandibular foramen with the nerve, branches into myohyoid just before the foramen, becomes the mental artery after the mental foramen

8

Where does the deep auricular artery go to?

the auditory tube

9

Anterior tympanic artery

supplies middle ear

10

Foramen for accessory meningeal

Foramen ovale

11

Branches from part 2 of maxillary artery

Anterior/posterior deep temporals, masseteric, buccal, pterygoid (lateral and medial)

12

What branch of maxillary artery enters the infrtemporal surface of maxilla near pterygomaxillary fissure?

posterior superior alveolar artery

13

Superior connection to the pterygoid venous plexus

Cavernous sinus

14

Anterior connection to the pterygoid venous plexus

Facial vein

15

Poerior connection to the pterygoid venous plexus

Maxillary vein

16

How do infections spread in the facial venous system

Can spread in any direction due to a lack of valves

17

Where are the sensory fibers of mandibular nerve the trigeminal nerve located?

trigeminal ganglion

18

What foramen does the mandibular nerve pass thru?

Foramen ovale

19

Where is the otic ganglion located?

medial surface of the mandibular nerve, just below the foramen ovale

20

Where do the preganglionic parasympathetic fibers of the otic ganglion come from?

glossopharyngeal nerve

21

What do the postganglionic parasympathetic fibers join?

auriculotemporal to reach the parotid

22

Lingual nerve pathway

Enters oral cavity just lateral to medial pterygoid, runs along internal surface of mandible, inferior to 3rd molar tooth

23

What does the lingual nerve innervate?

sensory to anterio 2/3 of tongue and floor of orval cavity

24

What does the chorda tympani nerve innervate?

taste fibers from anterior 2/3 of tongue

25

From what nerves does the chorda tympani arise from?

facial nerve

26

Where do preganglionic parasympathetic fibers of the submandibular ganglion run?

Via the chorda tympani to the submandibular ganglion

27

Where do postganglionic parasympathetic fibers from the submandibular gland run to?

submandibular/sublingual salivary glands

28

Lingual nerve injury proximal to chorda tympani results in what?

general sensation loss (just the lingual nerve is hurt)

29

Injury to lingual nerve distal to chorda tympani results in what?

both taste and sensation lost

30

Mylohyoid nerve

branches off of inferior alveolar nerve just before the foramen to innervate the mylohyoid and anterior belly of digastric

31

What nerves pass between lateral and medial pterygoid muscles?

Lingual and inferior alveolar

32

What nerve is split by the middle meningeal artery?

auriculotemporal nerve

33

What provides sensory fibers to the parotid, ear, and temporal regions?

auriculotemporal nerve

34

Secretomotor fibers of the parotid gland are from what?

otic ganglion via the auriculotemporal nerve

35

Path of secretomotor fibers of the parotid gland

glossopharyngeal nerve, tympanic nerve, tympanic plexus, lesser petrosal nerve, otic ganglion, auriculotemporal nerve

36

Main sensory nerve of the cheek skin and mucosal lining of the cheek

buccal nerve

37

What nerve (and pathway) supplies the temporalis?

deep temporal nerves (usually 2) supply the muscle from the deep surface

38

Path of masseteric nerve

passes thru mandibular notch to innervate the masseter

39

Where do the lateral/medial pterygoid nerves originate from?

mandibular division of trigeminal nerve

40

Motor fibers to muscles of middle ear

nerve to tensor tympani

41

motor fibers to soft palate muscles

tensor veli palatini

42

When does the chords tympani join the lingual nerve?

Inferior border of lateral pterygoid muscle