Infratemporal Region

Question 1

What vascurlature passesthru the petrotympanic fissure?

Answer 1

Anterior tympanic artery and chorda tympani nerve

Question 2

Contents if the infratemporal fossa

Answer 2

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

Question 3

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

Answer 3

Passes thru the pterygomandibular fissure

Question 4

Branches from part 1 of maxillary artery

Answer 4

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

Question 5

What branch splits the roots of the auricularotemporal nerve?

Answer 5

middle meningeal

Question 6

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

Answer 6

foramen spinosum

Question 7

What is the inferior alveolar artery’s path?

Answer 7

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

Question 8

Where does the deep auricular artery go to?

Answer 8

the auditory tube

Question 9

Anterior tympanic artery

Answer 9

supplies middle ear

Question 10

Foramen for accessory meningeal

Answer 10

Foramen ovale

Question 11

Branches from part 2 of maxillary artery

Answer 11

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

Question 12

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

Answer 12

posterior superior alveolar artery

Question 13

Superior connection to the pterygoid venous plexus

Answer 13

Cavernous sinus

Question 14

Anterior connection to the pterygoid venous plexus

Answer 14

Facial vein

Question 15

Poerior connection to the pterygoid venous plexus

Answer 15

Maxillary vein

Question 16

How do infections spread in the facial venous system

Answer 16

Can spread in any direction due to a lack of valves

Question 17

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

Answer 17

trigeminal ganglion

Question 18

What foramen does the mandibular nerve pass thru?

Answer 18

Foramen ovale

Question 19

Where is the otic ganglion located?

Answer 19

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

Question 20

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

Answer 20

glossopharyngeal nerve

Question 21

What do the postganglionic parasympathetic fibers join?

Answer 21

auriculotemporal to reach the parotid

Question 22

Lingual nerve pathway

Answer 22

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

Question 23

What does the lingual nerve innervate?

Answer 23

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

Question 24

What does the chorda tympani nerve innervate?

Answer 24

taste fibers from anterior 2/3 of tongue

Question 25

From what nerves does the chorda tympani arise from?

Answer 25

facial nerve

Question 26

Where do preganglionic parasympathetic fibers of the submandibular ganglion run?

Answer 26

Via the chorda tympani to the submandibular ganglion

Question 27

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

Answer 27

submandibular/sublingual salivary glands

Question 28

Lingual nerve injury proximal to chorda tympani results in what?

Answer 28

general sensation loss (just the lingual nerve is hurt)

Question 29

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

Answer 29

both taste and sensation lost

Question 30

Mylohyoid nerve

Answer 30

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

Question 31

What nerves pass between lateral and medial pterygoid muscles?

Answer 31

Lingual and inferior alveolar

Question 32

What nerve is split by the middle meningeal artery?

Answer 32

auriculotemporal nerve

Question 33

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

Answer 33

auriculotemporal nerve

Question 34

Secretomotor fibers of the parotid gland are from what?

Answer 34

otic ganglion via the auriculotemporal nerve

Question 35

Path of secretomotor fibers of the parotid gland

Answer 35

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

Question 36

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

Answer 36

buccal nerve

Question 37

What nerve (and pathway) supplies the temporalis?

Answer 37

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

Question 38

Path of masseteric nerve

Answer 38

passes thru mandibular notch to innervate the masseter

Question 39

Where do the lateral/medial pterygoid nerves originate from?

Answer 39

mandibular division of trigeminal nerve

Question 40

Motor fibers to muscles of middle ear

Answer 40

nerve to tensor tympani

Question 41

motor fibers to soft palate muscles

Answer 41

tensor veli palatini

Question 42

When does the chords tympani join the lingual nerve?

Answer 42

Inferior border of lateral pterygoid muscle