Anatomy Exam 2 - Temporal And Infratemporal Regions

Front 1

temporal fossa boundaries

Back 1

anterior - frontal and zygomatic bones
posterior - superiorly by the temporal lines
lateral - zygomatic arch
inferiorly - infratemporal crest
floor - frontal, parietal, temporal and greater wing of the sphenoid bone

Front 2

pterion - 4 bones that come together

Back 2

-frontal
-parietal
-temporal
-greater wing of the sphenoid

Front 3

contents of the temporal fossa

Back 3

temporalis muscle and fascia
masseter muscle

Front 4

boundaries of the infratemporal fossa

Back 4

lateral wall - ramus of the mandible
medial wall - lateral pterygoid plate
superior boundary - infratemporal crest
inferior boundary - angle of the mandible

Front 5

contents of the infratemporal fossa

Back 5

-temporalis muscle (inferior portion)
-medial pterygoid muscle
-lateral pterygoid muscle
-maxillary artery
-pterygoid venous plexus
-mandibular division of CN V
-chorda tympani
-otic ganglion

Front 6

larger of the two terminal branches of the external carotid artery

Back 6

maxillary artery

Front 7

divides the maxillary artery into its 3 parts

Back 7

lateral pterygoid muscle

Front 8

branches of the first part of the maxillary artery

Back 8

-deep auricular
-anterior tympanic
-middle meningeal
-accessory meningeal
-inferior alveolar

Front 9

deep auricular a goes to

Back 9

external acoustic meatus

Front 10

anterior tympanic a goes to

Back 10

tympanic membrane

Front 11

middle meningeal a goes to

Back 11

cranial meninges through foramen spinosum

Front 12

accessory meningeal a goes to

Back 12

cranial meninges through foramen ovale

Front 13

inferior alveolar a goes to

Back 13

mandibular teeth through mandibular foramen

Front 14

branches of the 2nd part of the maxillary artery

Back 14

-masseteric branches
-deep temporal branches
-pterygoid branches
-buccal branches

Front 15

masseteric a branches go to

Back 15

supply the masseter

Front 16

deep temporal a branches go to

Back 16

supply the temporalis

Front 17

pterygoid a branches go to

Back 17

supply the medial and lateral pterygoid

Front 18

buccal a branches go to

Back 18

supply the muscles of the cheek

Front 19

branches of the third part of the maxillary artery

Back 19

-posterior superior alveolar
-infraorbital
-descending palatine
-sphenopalatine

Front 20

pterygoid venous plexus location:

Back 20

infratemporal fossa

Front 21

pterygoid venous plexus connections

Back 21

-laterally w/ facial vein
-medially w/ cavernous sinus

Front 22

the small veins of the plexus usually join together to give rise to :

Back 22

maxillary veins

Front 23

maxillary veins leave infratemporal fossa and join with

Back 23

superficial temporal vein to form the retromandibular vein

Front 24

only division of CN V that has some motor fibers

Back 24

mandibular nerve

Front 25

motor branches of the mandibular n go to:

Back 25

-muscles of mastication
-mylohyoid
-anterior belly of the digastric
-tensor tympani
-tensor veli palatini

Front 26

sensory branches of the mandibular n go to:

Back 26

-auriculotemporal n
-buccal n (long buccal)
-inferior alveolar n
-lingual n

Front 27

auriculotemporal n supplies:

Back 27

-auricle
-skin over the temporal region
-temporomandibular joint
-secretory parasympathetic fibers to the parotid
-external auditory meatus and tympanic membrane

Front 28

buccal n (long buccal) supplies

Back 28

skin and mucous membrane of cheek and lateral surface of oral gingiva

Front 29

inferior alveolar nerve supplies

Back 29

all teeth on its side of the mandible

Front 30

inferior alveolar nerve gives off the following branches:

Back 30

mylohyoid n
mental n
incisive n

Front 31

mylohyoid n supplies

Back 31

anterior belly of the digastric and mylohyoid muscles

Front 32

mental n supplies

Back 32

skin of the chin

Front 33

incisive n supplies

Back 33

canine and incisor teeth

Front 34

inferior alveolar nerve block

Back 34

anesthetic agent is injected near the mandibular foramen

Front 35

lingual nerve supplies

Back 35

sensory to the tongue, floor of the mouth and gingiva

Front 36

chorda tympani is a branch of

Back 36

CN VII

Front 37

chorda tympani leaves CN VII and joins

Back 37

lingual n in the infratemporal fossa

Front 38

chorda tympani functions

Back 38

-conveys taste from the anterior 2/3 fo the tongue
-conveys preganglionic parasympathetic fibers to the submandibular gland
-postganglionic fibers from the submandibular ganglion go to submandibular gland, sublingual gland and other salivary glands

Front 39

type of ganglion of the otic ganglion

Back 39

parasympathetic - contains cell bodies of the postganglionic parasympathetic neurons

Front 40

route of nerve fibers of the otic ganglion

Back 40

-preganglionic parasympathetic fibers enter the ganglion via the lesser petrosal nerve
-postganglionic fibers destined for the parotid gland travel via the auriculotemporal nerve

Front 41

temporalmandibular joint

Back 41

synovial joint b/n:
-mandibular fossa and the articular eminence of temporal bone
-the condyle of the mandible
-articular surfaces are covered with fibrous tissue

Front 42

articular disc of the TMJ

Back 42

fibrous tissue and not fibrocartilage attached to the capsule

Front 43

upper joint cavity of TMJ

Back 43

-gliding joint
-b/n articular eminence, mandibular fossa and the articular disc

Front 44

lower joing cavity of TMJ

Back 44

-hinge
-b/n articular disc and the condyle of the mandible

Front 45

capsule of TMJ

Back 45

attached to margins of articular area of temporal bone and around neck of mandible

Front 46

ligaments of the TMJ

Back 46

-stylomandibular
-sphenomandibular
-lateral ligament

Front 47

stylomandibular ligament

Back 47

-a band of deep cervical fascia from styloid process to the angle of the mandible

Front 48

sphenomandibular ligament

Back 48

membranous band from spine of sphenoid to lingula of mandible

Front 49

lateral ligament

Back 49

attached to the capsule and to the articular disc
-checks mediolateral movements of TMJ

Front 50

opening/depression of TMJ

Back 50

supra/infrahyoids

Front 51

closing, elevation of TMJ

Back 51

temporalis and masseter (some medial pterygoid)

Front 52

protraction, protrusion of TMJ

Back 52

lateral pterygoids, masseter and medial pterygoid

Front 53

retraction, retrusion of TMJ

Back 53

posterior fibers of temporalis, masseter

Front 54

lateral movement of TMJ

Back 54

retractors of the same side (temporalis, masseter)
protruders of the opposite side (lateral and medial pterygoids, masseter)

Front 55

muscles of mastication and what they are innervated by

Back 55

all innervated by mandibular divison of V
-temporalis - deep temporal nn
-masseter - masseteric n
-lateral pterygoid - n to lateral pterygoid
-medial pterygoid - n to medial pterygoid

Front 56

sensory nerve supply to TMJ

Back 56

masseteric n
auriculotemporal n

Front 57

dislocation of the TMJ can injur which nerve

Back 57

auriculotemporal n